Pregnancy

Did you know that labor is divided into three stages? Find out what they are and how to tell when they start happening.

Exercises that you do during pregnancy don't have to be substantially different from the exercise you normally do to maintain and improve your fitness. But there are some general guidelines for exercise during pregnancy, as well as some helpful tips to keep you safe.

An embryo usually attaches to the upper part of the uterine wall, but sometimes implantation takes place in a lower location. The condition is called placenta previa and can interfere with a normal delivery.

By the Editors of Publications International, Ltd.

Once your pregnancy has been confirmed, what you most want to know is your due date. The average length of a pregnancy is 40 weeks from the first day of the last normal menstrual period. Here's an example of how it works.

By the Editors of Publications International, Ltd.

A miscarriage is the ending of a pregnancy due to the premature delivery of the fetus before the 20th week of pregnancy. At this point, the fetus is not developed enough to survive outside the uterus on its own.

By the Editors of Publications International, Ltd.

Iron deficiency anemia--a lack of iron in the blood--occurs in about 20 percent of pregnant women in the United States. Iron is an important nutrient during pregnancy, so it's important that you have an adequate intake.

A fertilized egg travels through the fallopian tube, implants in the uterus and nine months later, a bouncing baby is born. But what happens if the egg implants and begins to grow somewhere other than the uterus?

By Michelle Konstantinovsky

With a slew of recent research to support the benefits to child, mother and society overall, experts seem to agree: breast milk is best. What do you need to know before you start breastfeeding?

By Christina Breda

Male infertility means the male is unable to impregnate the female because of male factors. Learn what the causes of male infertility are and discover if you can resolve your male infertility issues with your doctor.

By DiscoveryHealth.com writers

If you think breastfeeding is out of the question just because you're having multiples, think again. There are countless reasons that breastfeeding may prove to be the best option, even with twins or triplets.

By DiscoveryHealth.com writers

What do you need to know about infertility? Get some basic facts about infertility, and remember that you're not alone.

By DiscoveryHealth.com writers

There are many factors that contribute to your ability to ovulate, conceive and carry a pregnancy to term, and many times infertility can be a male problem. Learn about what you can do to help prevent infertility.

By DiscoveryHealth.com writers

When it comes to human reproduction, animal metaphors are popular, with all those birds, bees and even storks. Here, we turn to biology to learn how human reproduction works.

By Craig Freudenrich, Ph.D. & Molly Edmonds

During a pregnancy, different kinds of prenatal testing are an important part of the process. Learn how all the different tests protect both mother and child.

By Craig Freudenrich, Ph.D.

Smoking is dangerous for pregnant women for many reasons — learn why.

By HowStuffWorks.com Contributors

Smoking is dangerous for pregnant women for many reasons -- learn why.

During pregnancy, an egg transforms from a tiny mass of cells into a living, breathing baby. Learn how the fetus develops during each trimester of the pregnancy and find out how the baby finally makes its way into the world.

By Stephanie Watson