Pregnant?

I really need someone to help me out.  About six days ago my boyfriend and i had sex without a condom. I am on a birth controll pill that allows me to have my period once a month and to keep things regulated. Last night my boyfirnd fingered me and an hour ir so later noticed what appeared to be spotting and i know for sure it isnt my period. Today i still appear to be spotting. Would this be because of the intamacy or because im pregnant? All answers are appriciated