i am 18 years old and i keep thinking that I am pregnant. I have been on birth control for a few months now. About 4 months ago my boyfriend and i had sex. It was protected for the most part till the condom slipped off. Last month i had 3 periods and now i have started bleeding again. I am a week early. There is pain on my right side when i push on it. i keep thinking I am pregnant because it feels like I feel something move or when I sit down something is pushing down on me. I have had some people feel but they cant find anything. Any ideas?