According to the American College of Obstetricians around 15-25 percent of all pregnancies will end in a miscarriage.

At four months, a baby’s leg muscles are beginning to form. When his or her feet connect with the ground, and their bodies are being supported, a four month old should push back against the floor, straightening his or her legs out.

If it is very important that you know if and when an egg is released, a urine test kit, called an ovulation predictor kit, works better. BBT also is not a reliable way to prevent pregnancy.

Studies show that obese men are less fertile than men of normal weight, have lower sperm counts and fewer sperm that can swim well.

Extra-uterine growth is affected by the patient's monthly hormonal cycle. The resulting bleeding does not have an exit route.

You should swallow the pill at the same time every day, whether or not you have sex. If you miss one or more pills, or start a pill pack too late, you may need to use another method of birth control, like a condom.