Being pregnant isn't an excuse to binge on your favourite foods. In fact, doing so can be very unhealthy for both the expectant mother and her baby. Daily calorie requirements will only shift marginally, and increase by around 300 calories a day.

If your baby’s skin appears blue colored, it may be a sign that the lungs or heart are not working properly, and the baby should be seen by a doctor immediately. A newborn’s hands or feet may appear blue when cold, and should quickly return to pink when warmed. Also, the face, lips, or tongue may appear blue during a period of hard crying, but should return to pink once the crying has stopped.

An older woman's eggs aren't fertilized as easily as a younger woman's eggs — and might not develop normally even after fertilization occurs.

Being overweight or significantly underweight can affect hormone production and inhibit normal ovulation. Maintaining a healthy weight can increase the frequency of ovulation and likelihood of pregnancy.

Like it or not, age remains the biggest determinant of fertility. 'No matter how much you take care of yourself, you can't slow down ovarian aging,' says Dr. Kutluk Oktay, medical director at the Institute for Fertility Preservation at the Center for Human Reproduction in New York City.

Antibiotic treatment may cure an infection of the reproductive tract, but doesn't always restore fertility. Your doctor may recommend hormone replacement or medication in cases where infertility is caused by high or low levels of certain hormones or problems with the way the body uses hormones. A varicocele can often be surgically corrected or an obstructed vas deferens repaired.