pregnant? sore back, non existant period, lots of cum

Ok. So fist off, I would like to thank those who are taking there time to read and write comments on my little issue hear. Second off, I would like to explain my story. Jan 28th 2007, my boyfriend and i were fooling around. We did not have sex, but he did stick he penis on my vagina. Then he accidentally went. When he went he was not on my vagina, but he was near. He also got some on my butt. So I whipped my butt with the tissue, then I preceded to wipe my vagina with the tissue (I know very stupid. but didn’t realize it at the time.) both my butt and vagina had a ton of sperm on it. I also orgasmed a lot, so that made a nice little stream for the sperm to swim up off. To make matters worse, I was scheduled to start my period very soon, so my egg was already down, and therefore easier to get fertilized. Today is March. 15 2007, and I still haven’t gotten my period. That means I am a month an 2 weeks late. I have gotten feelings like I was gonns start my period, but it’s never has started. I have had a ton of white clearly sticky discharge (sorry for the graphic image), dizziness, I have had back pains, and sudden sharp pains in my stomach. I have also gotten bumps on my arolea, and veins are a lil more defined in my breasts. This is all a bit graphic, but i also feel like i have to digest my food more. I am a lot more moody and tired lately, and now I’m just scared. I am in college and am 18 years old. This can’t happen to me right now. What do you guys think?? Thanks!