I have taken Lupron.

But that was AFTER the surgery to remove the endometriosis. I think it is very very strange that your doctor is using it to diagnose you.
You should see a GYN-Oncologist as they treat severe cases of endometriosis. It may be that you need a hysterectomy at this point. I had to have one. Your endo may have spread at this point to other organs and they have to open you up.

I had one one laproscopic surgery where they lasered off a lot of it but it grew back and then I had to just have it all out and it just went everywhere. I had to be off female hormones for a while until he felt it was dead. I had the lupron after my first surgery and I was in my 30's. I did not after my hyst. You need to consult an expert.