Endometriosis?

Destiny • 18, heading down to Austin for college at UT. Planning on becoming an OB or a Neonatal nurse 💕 constantly in baby fever
AF was 2 weeks late, and when it did come, I had heavy heavy bleeding (so heavy that I was going through a heavy flow tampon in 2 hours). I've always had terrible cramps when I'm not on birth control and I wasn't on birth control last month but these were worse than ever, plus the intense back pain. And I'd heard of endometriosis before and I looked up the symptoms and I seem to have all the symptoms and I was just wondering what you all think I should do..?