Because sperm can live in the body for up to five days, but an unfertilized egg dies after 24 hours, you increase the odds of having sperm and egg meet by having sex just prior to ovulation. But how do you know when you are ovulating?

If your periods are very regular, and come consistently anywhere from 21 to 35 days apart, you can also use our ovulation calculator to predict when you are fertile.

But by tracking the physical signs of fertility, you will get more exact results, even if your cycle varies slightly each month. You can track your fertility by charting your Basal Body Temperature (BBT), Cervical Fluid, and Cervical Position.

Basal Body Temperature
BBT is the temperature of your body before any activity—your body’s baseline temperature. Your BBT rises slightly on the day of ovulation and remains elevated until just before your next period starts. To track your BBT, take your temperature orally with a BBT thermometer (they sell for about $10 at any drug store) every morning before you get out of bed and chart the results. A BBT thermometer only registers temperatures between 96 to 100 degrees F. and can detect very slight changes in your temperature. Most women have a BBT of 96 to 98 degrees normally before ovulation and 97 to 99 after ovulation.

Cervical Fluid
Cervical fluid, sometimes called cervical mucus, is produced by the lining of a woman’s cervical canal and varies in consistency, color, and amount based on where you are in your monthly cycle.

As you get closer to your time of ovulation, your cervical mucus will change in order to better permit the transfer of sperm into your cervix.

To get a good sample of your cervical mucus at any time, place your fingers (make sure they are clean) inside your vagina. When you pull your fingers out, examine the sample you’ve obtained, noting its consistency and color.
Immediately after menstruation, you will have several “dry days,” where there is very little fluid at all.  What is there may be white or opaque and thick and sticky. As you approach mid-cycle, you will note more moistness, and the fluid will be thin, and possibly cloudy. If you hold some between your fingers, it will be slightly stretchy.
In the few days just before ovulation, which is when you are most fertile, your cervical fluid will be copious, thin and transparent. It will be very stretchy, almost the consistency of egg whites.

Just as your cervical fluid changes throughout your cycle, so does the position of your cervix in order to facilitate the transportation of the sperm and fertilization of the egg during your fertile time. Monitoring the position of your cervix is another way to track your ovulation times. Using these three methods combined will give you the most accurate results.

Begin by checking your cervical position at the end of your period, and check it daily until you reach your time of ovulation. You should do this at the same time each day, and in the same position each time. You can check your cervical position while sitting on the toilet, or it may be easier to place on foot on the toilet and keep one on the floor. Move your middle finger all the way up into your vagina until you hit your cervix, which will feel like a rounded cylinder.

At the beginning of your cycle, your cervix will be low and easier to reach. During ovulation, it will rise to a higher position, and may even be difficult to reach with your middle finger. It will drop back down to a place where it is easier to touch after you ovulate.

Author: Dawn Allcot

Some things that were very easy in our 20’s – losing those last 10 pounds, pulling an all-nighter and being bright-eyed and bushy-tailed for work at 9 AM, conceiving a baby – suddenly become difficult as we get older.

Why is it more challenging to conceive after 35, and even more so at or after the age of 40?

Women are born with as many eggs as we will ever have. As we age, we may have cycles where an egg is not released. These begin around the age of 35 and grow more frequent over time. The quality of existing eggs also declines, creating additional challenges. The chance of miscarriage in a woman over 35 is 20% to 35%.

Other factors that can lead to decreased fertility in “older” women are:

• Decreased cervical fluid which helps transport sperm through the cervix

• Increased chance of surgery, which created scar tissue around the cervix or fallopian tubes

• Endometriosis (which is a leading cause of infertility in women of any childbearing age)

• Heart disease, diabetes and other health problems that become more prevalent with age

It’s important to note that fertility declines gradually as we get older. It’s not like a switch flips on our 35th birthday and suddenly our odds of conceiving drop. For instance, all other factors being equal, a healthy 35-year-old woman has a better chance of conceiving than a healthy 40-year-old. This may sound depressing, but it’s actually good news. If you are over 35 and deciding on when to start trying for a child, the time is now! In fact, the March of Dimes Web site reports that 1 in 5 women has her first child over the age of 35. Women are waiting longer to begin their families, and this offers many benefits.

Women over 35 are:

• More financially stable, in general

• More established in their careers, so a break for maternity leave may not be as much of a setback

• Have done a lot more, so won’t feel as if they are “missing out” or “giving anything up” to have kids

Whether you are minutes away from menopause or years, there are things you can do to increase your odds of conception.

Be patient – While most couples conceive within 6 months, it can take a healthy couple over the age of 35 as long as one or two years to conceive. If you’ve been trying for six months with no luck, however, you may want to visit a fertility specialist for an assessment.

Have a preconception doctor’s visit – While this typically isn’t necessary in a woman under 35, a general health assessment from a professional can get you on the right track with a healthy diet and exercise program and the knowledge that there are no obvious obstacles to fertility.

Be healthy – Make sure your weight and BMI are within the healthy range, and give up bad habits such as smoking and drinking. A healthy diet can lead to an easier pregnancy for anyone, and especially for women over 35.

Track your fertility – Use any number of available methods to track your fertility so that you will know when – and if – you are ovulating. Be vigilant about having intercourse prior to and during your time of ovulation to increase your odds of conceiving during any cycle.

Take prenatal vitamins – Again, this is good advice for any woman trying to conceive, but can especially increase the odds of a rapid conception and a healthy pregnancy for a woman over 35. It is especially important to get enough folic acid, which decreases the risks of certain genetic disorders. For more tips on prenatal nutrition and exercise, read the article “Nutrition and Trying to Conceive.”

Also be aware that a pregnancy over the age of 35 carries increased risks of:

• Miscarriage

• Down’s syndrome and other genetic disorders

• premature delivery

• Twins

• Delivery by c-section

However, tests and screening can provide peace of mind that your baby is healthy, while a healthy lifestyle and positive outlook increases the odds that your pregnancy will go smoothly.

Author: Dawn Allcot

Do you have a chance? This depends on several factors:

1. Age of a mother.
   This is one of the reasons of increasing amount of twins’ birth – a worldwide tendency to late deliveries. A probability of birth of two and more babies increases, if a mother is older than 35 years. (By the way, this chance increases even more after 50 years). Unfortunately, if you’re less than 25 years, your chances are half of chances of those who are 35. The matter is that with age, ovulations take place not during each cycle – and this is quite normal. As a result, free hormones, affecting ovulation, accumulate and release during the following cycle, stimulating coming out of several ovules at once.
2. Inheritance.
   If some of your or your husband’s relatives has twins, then your probability of giving birth to several babies at once is extremely high (especially, if you inherited this trait from your mother). And, regardless of common opinion, this does not necessarily take place in one generation – you can inherit a gene, which is responsible for formation of several ovules, suitable for insemination, in your organism.
3. Genesial technologies.
   Often women, who were prescribed hormonal medicines during sterility treatment or while preparation to artificial extracorporal fertilization, get plural pregnancy. Hormonal medicines stimulate ovulation in the midst of a cycle and, if a woman receives overdose of a medicine, then several ovules come out of ovary follicle at once, not just one. As a rule, doctors “remove” excess ovules. Burt sometimes women refuse from it, due to religious or other motives. In USA and Israel there were cases, when women gave birth to 6 or 7 babies at once.

Signs of plural pregnancy
It’s very easy to determine a quantity of babies you’re going to give birth to – you can do it with the help of echography on 5-6th week of pregnancy, but there’re such situations, when you cannot pass through echography. So, it will be good for you to learn some signs of pregnancy with twins. Moreover, unfortunately, doctors not always can give you an exact answer about your pregnancy during the first 10-12 days.

Psychological factor. You should not ignore your intuition. Many women can be assured in the fact that they are pregnant with twins since the moment of conception already. Often mothers of twins admit that they knew about their forth-coming birth on the earliest terms of pregnancy. If you feel, you’re expecting twins, tell your doctor about it for sure.

High biochemical indexes. Women pregnant with twins have increased indexes of some biochemical tests. For example, content of alpha fetoprotein – it produces a growing fetus and come to mother’s blood. Or a high content of a hormone HCG (human chorionic gonadotropin), which supports pregnancy. While placenta is developing, its presence can be determined in blood or urine even before delay of menstruation, and lots of pregnancy tests are based on its indexes.

Intensive morning sickness and/or vomiting. More heightened, in comparison with usual pregnancy, content of hormone HCG (pregnancy hormone) can increase morning sickness. Sickness, sometimes accompanied by vomiting, can already appear a week after conception, i.e. even before your usual menstrual cycle begins. Sickness appear more often in the morning, but it’s also possible in any other time of a day.

Intensification of other pregnancy sings. Many (but not all) women, expecting twins, suffer from other intensified sings of pregnancy – due to a significant increase of hormones, in comparison with usual pregnancy. For example, they feel heightened breast sensibility, more frequent impulses of urination, extreme tiredness and hunger. In the second term a woman may suffer from strong breathlessness, hands and legs spasms, sudden increase in weight and belly sizes, and an intensive stir of fetus. Hemoglobin decrease or anemia – are also usual events for plural pregnancy. And in general, this is not surprising, as during such pregnancy a load on a future mother’s organism increases in several times, depending on the quantity of babies she’s bearing. Unfortunately, this means that complications are much more often met during such pregnancy.

Quick weight increase since the first days of pregnancy. By the way, this is one of the first sings of two babies’ presence in a woman’s uterus. This is absolutely normal: double nutrition plays an important role during the first term of pregnancy. And a quick weight increase is necessary.

High physiological indexes. During the first medical examination doctors will be already able to tell you that your uterus size is little bigger for your assumed term of pregnancy. This tendency will remain for the whole term of pregnancy. Other physiological indexes will be bigger too: circularity of belly through navel, height of uterine fundus standing and others.

Heartbeat of two hearts can be heard. When a doctor begins listening to a baby’s heartbeat, he will hear beating of two hearts, instead of one. Two separate heartbeats can be heard on the 13th week of pregnancy already, by the 28th week a doctor will be able to determine 3-4 large parts of body (head and bum) and many small ones by touch.

About the Author
Yana Mikheeva is the creator of the Baby-Health.Net at http://www.baby-health.net Are you going to get pregnant? Visit our friendly resource and read information on pregnancy and parenting, painless childbirth, growth and development of a baby, baby health, safety, signs of pregnancy. She also has a blog for women at http://www.womanspassions.com/blog/.

Did you know that the number of twin births have more than doubled since the early 1970s? Today, about one of every 35 births in the United States are twins. Even more significant is the number of triplet and higher multiple births which have increased 200 percent over the last three decades.

Why the huge jump in the number of multiple births?
The most obvious reason for the growing birth rates of twins and multiples is the use of fertility drugs and treatments. These medical interventions are most often the reason for births of four or more multiples. Recent studies from the Center for Disease Control (CDC) show that approximately 43 percent of live births resulting from assisted reproductive techniques were multiples.

But fertility drugs don’t tell the whole story.

Where you live could make a difference. If you reside in Massachusetts or Connecticut, a study by the National Center for Health Statistics found that the rates for twin deliveries was as much as 25 percent higher than the overall national rate. If you want to give birth to triplets, move to Nebraska or New Jersey. Both states boast a percentage of triplets that is twice the national average.

On the other hand, if you reside in tropical Hawaii your chances of having a multiple will decrease to about 30 percent below the overall U.S. rate.

The time of year and the number of daylight hours also has an impact on multiple births. More fraternal twins are conceived in July than in any other month, while January has the fewest twin conceptions. Scientists speculate that this is probably due to the longer length of daylight in July, which allows for a higher secretion of the Follicle Stimulating Hormone in women.

Enhanced medical care and good nutrition may play a role in skyrocketing multiple birth rates, although experts caution that it is difficult to directly link these influences. In fact, if access to state-of-the-art medicine were a deciding factor, then why does the Yoruba tribe of Nigeria have the highest twinning incidence in the entire world? These Nigerian people attribute it to their population’s consumption of a specific type of yam. Yams? That’s right, scientists have discovered that these colorful vegetables that are grown only in Africa contain a high level of a substance that is similar to the hormone estrogen — which could bring on multiple ovulation.

Surprisingly, age can work in a woman’s favor when it comes to conceiving twins. Older mothers traditionally have a higher chance of delivering fraternal twins, with the odds increasing to one in 27 when the mother is 35 years or older.

While identical twins have no familial connection, it is true that fraternal twins can run in the family. Female fraternal twins score an impressive one in 17 chance of giving birth to their own set of fraternal twins, probably because many carry a gene for hyperovulation, which means they sometimes release more than one egg during ovulation. And, if a woman has already given birth to fraternal twins, the chance of another set increases fourfold.

Want to learn more about babies and multiples? Visit the All About Baby website at www.allbaby.com for extensive child-related content, including tips on how to pick the best name for your newborn, interesting birth statistics, a list of the most popular given names for children and much more.

**All statistics were taken from the Center for Disease Control (CDC), the National Center for Health Statistics and from the National Organization of Mothers of Twins Club (NOMOTC).

About The Author
Nancy Wurtzel founded her ecommerce business, All About Baby, in 1995. All About Baby located online at www.allbaby.com specializes in personalized and memorable gifts for children as well as interesting and helpful child-related site content. Ms. Wurtzel consults with small businesses seeking to expand. nancy@allbaby.com