Lower abdominal pain daily for 3 months, abnormal vaginal bleed/dk brown discharge + small clots. smear, bloods and transcaginal u/sound normal. help?

What did your gyn : Say? I assume you cultures also to r/o infection, you will probably need a hysteroscopy with endometrial biopsy to r/o anything inside the uterus like endometritis, or polyps or fibroids and you will also prob need a laparoscopy to r/o conditions like endometriosis, please discuss the plan with your gyn as your work up should not be over until you can get a diagnosis.