I had surgery about a year ago to remove 3 "chocolate" tumors and an ovary due to my endometriosis, the only thing any doctor will tell me is that I need to be on birth control to help keep these tumors from occurring again. Unfortunately, my current OB/GYN won't return my calls or refill my prescription, so I have been off birth control for about 2 months. What I am wondering is how likely is it that my body is going to start producing these painful tumors again? Should I be concerned that I'll need to have another surgery?