Okay I know the title sounds weird, but here's what happened. I'm a virgin and on birth control. However, on Jan 1st me and my boyfriend started humping each other with our clothes off. He did not enter me, but while rubbing together it was moist down there. He may have (in the midst of wetness) rubbed his penis across the entering of my vagina, but it did not go in. Also he didn't cum on me or anything but I'm well aware of the potency of precum. I think I'm paranoid but I feel like ever since then my stomach has a weird ab-looking pouch on it and occasionally looks more swelled then im used to. Now it's only been 12days since that happened but I'm just so afraid I could be pregnant from that. Also, at this time I had just gotten off my period like two days prior. How soon can you concieve after a period? I'm freaking out.