What do you mean by IVF Specialist? In vitro fertilization (IVF) is a complex series of procedures used to help with fertility or prevent genetic problems and assist with the conception of a child. During IVF , mature eggs are collected (retrieved) from ovaries and fertilized by sperm in a lab. How long does IVF take to get pregnant? How long does it take to get pregnant with IVF? One cycle of IVF takes about two months. Women younger than age 35 will get pregnant and have a baby with their first IVF egg retrieval and subsequent embryo transfer(s) about half the time.