Hi, I am 45 and had a partial hysterectomy 7 months ago. The doctor said she removed a dermoid (solid cyst), various fibroids and other cysts plus my tubes, uterus and left my r ovary and loads of endometreosis. I just went to her office with left side groin pain that radiated to my butt which a vaginal u/s showed a 5 cm complex cyst. The NP immediately ordered a CA 125 and surgery to remove the ovary. States it may be cancer??? If I didn't have cancer 7 months ago when they were in me the first time, why do they now think I have cancer with this cyst and how fast does it take for a complex cyst to turn into cancer?