I have never had sex, but I have had oral sex before. A penis has never been near my vagina in fact. My periods are never really regular, seeing as how I am only 16, but I did have a normal period last month around May 14th lasting around four days. I got my period May 17th and it started out pretty light, but got heavier. Now today, the 19th, it is not heavy at all. I have been nauseated for days and am still experiencing slight cramps in my lower abdomen. I was wondering if this normal? Is there any possibility I could be pregnant?