Nov 19, - Sure, there is probably a period just after the procedure where you and it was dangerous to have intercourse after a tubal ligation, why have. A postpartum tubal ligation is a procedure that blocks the fallopian tubes to prevent you from becoming pregnant. The 2 fallopian tubes carry eggs from the ovaries to the uterus. The procedure is done after delivery of a baby. This procedure is done shortly after you have had a baby, when you are still in the hospital.