IVF stands for in vitro fertilization. It’s one of the more widely known types of assisted reproductive technology (ART). IVF works by using a combination of medicines and surgical procedures to help sperm fertilize an egg, and help the fertilized egg implant in your uterus. First, the patient takes medication that makes several of their eggs mature and ready for fertilization. Then the doctor takes the eggs out of the body and mixes them with sperm in a lab, to help the sperm fertilize the eggs. Then they put 1 or more fertilized eggs (embryos) directly into the uterus. Pregnancy happens if any of the embryos implants in the lining of the uterus.