Fertility, & Pregnancy issues? What are we doing wrong?

Hi, My fiance (19,M) and I (18,F) have been trying to get pregnant for about 7 months now. I was on birth control 'Gianvi' for a little over a year, and I stopped it without a Dr consent about 8 months ago, so a month before we we actually started trying. My periods have always been irregular. Last month I had two periods a week apart. I was suppose to start yesterday (wednesday. July 18, 2012) and I havent yet. He has gone to the Dr, and he has checked out fine, he can have kids. I have not gone to get checked out to find out wether or not I can have kids, but I do have blood filled ovarian cysts. My mother had endometriosis. We have intercourse every Friday, Saturday, and Sunday, several times those three days (Some days sex is very painful). What are we doing wrong or what could be wrong with me?