Ok, 3 days ago my boyfriend and I had unprotected sex. He pulled out and came on my stomach. Some of it got on my bra so he took his finger and wiped it off and then fingered me with the same finger. I didn't have a period this month because I skipped it this month prior to us having sex. It's only been 3 days, with no sign of my period. My question is, could I get pregnant?