About two months ago my boyfriend and I had unprotected sex right before my period, but he never came close to finishing inside me. I also started taking birth control pills that same week. Some of my symptoms are very similar to being pregnant. I am very worried that this is the case but I've also taken 4 pregnancy tests that were all negative and I've gotten two periods... The first one was 10 days long... that was the first time I ever started taking the pill  and towards the end there was some breakthrough bleeding. And the second one on my second month of the pill lasted only three days, but it was very light. He thinks that I am just having side effects from the pill because it's only been two months on it... I just feel very bloated/heavy and my breasts hurt more then ever. What do you think??