Hello,
For such pain, possibilities of endometriosis and adhesions should be ruled out. I would suggest you to get an examination done from your gynecologist and an ultrasound or CT abdomen done. It will also rule out other gastrointestinal and genitourinary causes of this pain.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.
keep going back to your drs. 9 years is a long time u have suffered enough.