I am 19 years old and I have been on birth control since I was 13 because of accutane. I have been on and off of it for the past two years and my period has not been regular. I had not had my period for two months, and I started spotting. I then had sex with my boyfriend, and that was a month ago. I have not started, and after we had sex (protected) I stopped bleeding. I took an at home pregnancy test and it showed up positive, but I am wondering if I should go see a doctor.