Four days ago my boyfriend and I were fooling around in bed. Neither of us have ever had sex or been in any way sexually active. We ended up both with our pants off and his penis was touching my vagina, although there was no entry and most of the time the head of his penis wasn't on it. I am worried about this because my period always or usually comes at the end or the beginning of the following month; this happened December 31 and today is the 4th of January and I still don't have my period. I have never had anything enter my vagina, I don't even use tampons because they are painful for me to insert. Does this mean that my hymen would have blocked any preejaculate from entering? He did not ejaculate at all; we stopped because we knew we had gone too far and want to be wise for our future, as well as avoid betraying our personal convictions about sex before marriage. I am afraid of pregnancy, is there a possibility I could be pregnant, and what are the odds? I have been feeling minute cramping that comes before my period, but could these small cramps be from something else? Or should these cramps be an assurance that my period is on its way? Thank you, I am anxious for a reply.