It's now September and I had unprotected sex in the last week of June. I am on birth control, and haven't stopped taking it although I thought I may be pregnant. I never missed a pill a day, but I am on other drugs that may alter how well it works. When it was time for me to get my period I got it, but it was not regular at all. It was mainly brown blood, lasted two days short, and was very very light-no dark blood at all. I took two pregancy tests that resulted in negative. When it came time for my second period I got it and it was about the same as the first period except a little darker, but mainly all brown blood. I took two more tests and both came out negative. All around this time I never had morning sickness or felt sick. About a week and a half ago I had my third period and it was more like normal-it had more regular blood in it. I'm worried that I may have just been getting my period because I'm on the pill and it's supposed to make me get my period? Just recently I've been worried I'm pregnant again because I just started getting red bumps and dots around my stomach, and I read somewhere that if you're pregnant you may get red bumps on your stomach pumping blood there. Also, I've been having major pains in the left area of my lower stomach. It feels like something is 'growing' there if that makes any sense. It's just the wierdest feeling, it's like a cramp, but nothing I've ever felt before. It's never happened before, and it's been lasting about a week and half. I don't know if I should start worrying again and see a doctor for good? It's been two months!! Is there any possible way I could be pregnant?

Thanks.