Signs of Endo?

Alyssa
Friday afternoon my period came. By Friday evening I had painful cramps, and even with pain killers they were severe. I ended up vomiting most of the night because I was so nauseous. My period wasn't very heavy yet. Saturday I was very weak and fatigued and still had painful cramps. My period was extremely heavy- I was bleeding through a "super" tampon in about 20 minutes. Sunday I still had some cramping with aching lower back pain and body aches all over. Usually my cramps are only the first day of my period, so I was surprised I was still feeling them. Monday I still was not feeling well, with body aches, minor cramping, and still slightly nauseous. Not much of an appetite yet either. 
I am also iron deficient and being tested for celiac disease in a couple weeks. I am 19 years old and otherwise healthy! 
But could these be signs of endometriosis? And would it also explain my anemia, too? 
I've only have a few periods that made me feel this sick, and they seem to get progressively worse each time I get them. 
I'm still waiting for my doctor to get back to me, but thought I'd ask you all.