Help! My period is out of this world

Morgan
My period came 6 days early and has been so heavy I go through tampons like toilet paper! It's awful.. My cramps are excruciating.. I was on depo before and never have had a period this bad. Is there something wrong w me? Should I see a doctor?! I am freaking out scared I have something that is compromising my fertility. Endometriosis runs in my family unfortunately.