I'm sorry to hear about your med problems.
My doc thought I had endo, too, but that was just due to excessively painful periods. I did not have any of the other symptoms you have described.
It doesn't make sense to me that a pulled groin muscle would effect your period, give you discharge, and cause such pain during a pelvic exam. And would you have a pulled groin muscle for 7 months?
I would try to get your appt. w/ the gyno bumped up. I would not delay, especially considering your past with the recent hemmorhagic ovarian cyst.