On the afternoon of November 30, 2009 I took a birth control shot. I had intercourse the night before, which was unprotected. For some reason, when I got to the doctor, my menstrual cycle had begun already. I still took the shot, I had bled for 3 months straight, which was everyday for 3 months. After it wore off, I never took the shot again. It caused weight gain, and alot of other side effects. So I had unprotected sex, a month after I got off of the shot. I have no idea, but I had no success in conceiving a baby. Even when I ovulated, my menstrual cycles were healthy and heavy, I never got pregnant. When exactly does the birth control wear off? I've heard that it can take up to a year or two. It is now March 28, 2011. Is this a good time for me to try again? Has the birth control worn off by now?