Abortion can be performed through medication, surgery, or other medical procedures depending on the gestational age of the pregnancy. There are three main categories of abortion methods - those that invade the uterus with instruments, those that administer drugs, and those that invade the uterus through abdominal surgery. The specific procedures used vary based on whether the pregnancy is in the first, second, or third trimester. Later term procedures are now illegal in some places due to certain laws. Experts encourage viewing details of abortion procedures to fully understand what is involved.