well, me and my boyfriend were messing around and i was giving him a hand job but then my hand started to get tired so he took over for about five minutes, but before that there was a little precum that came out but it was dried on his penis from me rubbing it, but im worried that it got on his hands because about 10 minutes after he fingered me.. could i be pregnant? im due to get my period in two days and im so stressed out...