I dont know if I am pregnant. I was with my boyfriend October 4 and he ejaculated on his stomach. From what I can remember, neither of us touched it. But if one of us had touched the sperm, and then fingered me, could I get pregnant? I know it was dry and had to of been more than 7-10 minutes. Ive done research, and it says that exercise can off set you regular menstrual cycle. Which I recently started exercising at least 6 hours a week, where i was only doing 1-2 hours 2 months ago.