Postive pregnancy test after abortion


I had an abortion two months ago. A week after my abortion I started taking the birth control pill. I still have not gotten my period since the abortion, so I decided to take a pregnancy test and it came out positive. I’m so shocked! I’ve been on the pill and my partner and I use the pull out method. I’ve also been experiencing cramping and notice some light spotting last week. I have a doctors appointment coming up, but just wanted to know if this has happened to anyone else.