Endo pain is mainly like bad period pains and bleeding one and off all the time , like stabbing pains by the ovaries problems going the toilet with pain really bad headaches sometimes migraines even , leg pain joint pain back pain and fatigue plus there's other symptoms , it depends how far it's gone you can get pain everywhere if it's gone into stomach /pelvis get it checked out maybe a MRI scan , I've had 2 Mri and I take the pill to control the endo mines in the one place and I was still in pain and bleeding , I've had it for 3 years now with yearly check up and scans

Defiently keep on the list to see that doctor, it does seem possible that you have endo. Number one indicator is the pelvic pain! Good luck!