Okay, so my boyfriend and i were messing around. I gave him head and he came, and then we stopped hooking up. But about 20 minutes later we started hooking up again, and this time we went a little further. He put himself in me for about 5 seconds, and didn't cum, but wasn't sure if he did pre cum or not. i didn't go to the bathroom for like an hour later, and i just found out that i was ovulating that day. I didnt think this would be a problem, but two days later i was just making breakfast and all of the sudden got dizzy and felt like throwing up. I've been crying for the past two days randomly and over small things, which isn't like me. I talked to some of my friends that went through the same thing and they said it was just my body reacting to having him inside of me. Is that the case or do you think i could be pregnant?