Does medical abortion cause infertility? I am trying to get pregnant after an abortion 5 months ago and no results. I have really irregular periods

Rarely a problem. Most abortions (medical or surgical) don't cause future fertility problems, but if you have some pregnancy tissue left behind or an infection afterwards it can cause scarring inside your uterus (asherman's syndrome). A hysterosalpingogram (hsg) test will check for this as well as checking that your tubes are open. You should get checked to find out why you're irregular by a rei physician.