My doctor prescribed me the mini pill and told me that after 3 uses, it would be active. On my 2nd day of usage, I started bleeding lightly (I think I think it was my period) but I had unprotected sex and my boyfriend came inside me, is there a possibility I could be pregnant? We did it again today since my 2nd usage and he came inside again but I had been taking the pill everyday. This time I took the pill an hour or so later. Could I also get pregnant then? My nipples are very tender and have been for the last 3 days. Im really exhausted and Ive been getting headaches.