Am I pregnant? HELP!!!!?

Okay. About two weeks ago, my boyfriend and I were experimenting. I gave him a ******* and he ejaculated. He may have got a little bit on his hands, but he wiped it off on his pants. After that, he fingered me. My stomach has been upset for the past few days.. And I'm worried sick. I am pretty sure I got my period yesterday. The blood is bright red, and pretty heavy (enough to have to use a pad, and you can see the blood though it) I'm not sure what to do. Does it sound like I'm pregnant? (this is also the time I'm suppose to be getting my period) could i just feel weird from all the stress. ???