i agree with jimi these are not normal even if only a bit. puberty could be a cause, i know i sufferred terribly when i went through it but back then there were few people that would ever bring up the subject, or they didn't even talk about it in sex ed. I was so bad at one time i tried to overdose, but the i got my mensis and when i woke up i knew that that was why i tried. it goes on into your 20s too.at least it did for me.good luck and try to find a doc and t to help you.