I have been having intermittent groin pain for some time now. Mostly it's my upper thighs under my buttocks other times just general groin pain. It's a deep pain feeling. Been to ob/gyn and my PD multiple times now, have been screened for all stds, negative. Pelvic exam fine. Urine and blood fine. Had transvaginal and pelvic ultrasound, slight thickening of endometrium likely due to my period coming. Positive for yeast, been on high dose of meds for this. Brown blood at the end of my periods for 2 months now. Sometimes have to push to urinate completely/ am often going back to the bathroom 20 minutes later. What worries me is the groin pain. Any ideas what is going on!? Thanks