So over the last few months I've had some pretty troubling symptoms. My period will sometimes last for several weeks or a week on a week off and then back on. My back kills me worse than normal, my cramps have me not wanting to get out of bed, crying, and can't move, and my period is typically heavier than it's ever been when I was younger. I started my period at 10 years old so I've been going through having a period for 12 years. It's always been bad but never THIS bad. I'm worried I could have endometriosis or that something really really serious is going on. What should I do?