Hello! I am a 19 year old woman without kids and I've been experiencing painful, long, heavy periods since I was 13. The cramps I get are extremely painful (although it's rare if I feel nausea when I'm on it), and for the first four days it is very heavy, but I've always experienced pain whenever I have a bowel movement. It never happens when I pass gas or urinate, but I just think it's a little odd. It only happens for a few days before it starts, and maybe lasts up until the third day of my period. Should I go see a doctor about this, or should I not be worried?