Multiple gestations (Twins) 

The use of fertility drugs to induce ovulation often causes more than one egg to be released from the ovaries and can result in twins, triplets, or more. In vitro fertilization (IVF) can lead to a multiple pregnancy if more than one embryo is transferred to the uterus. Identical multiples also may result if the fertilized egg splits after transfer.

The risk of certain complications is higher if you are pregnant with multiples. You most likely will have more frequent prenatal care visits with your (ob-gyn). If a problem is suspected, you may have special tests, such as a nonstress test or biophysical profile, and more frequent ultrasound exams.

Having multiples might increase your risk of postpartum depression. If you have intense feelings of sadness, anxiety, or despair that prevent you from being able to do your daily tasks, let your ob-gyn or other member of your health care team know.