Hello, Welcome to Healthcare Magic. I have read your question fully and understand your concerns. Cervical erosion/cervical ectropion can cause spotting in-between your periods, vaginal discharge or bleeding after intercourse. It does not normally cause back pain or pelvic pain. It does not cause prolonged periods or heavy bleeding. Colposcopy is sufficient investigation for cervical erosion, as it magnifies and gives a clear picture of the cervix. Blood tests will rule out any other causes of the lower abdominal pain/back pain, I guess you may had some hormonal tests too. Ultrasound would help to rule out any fibroids, any small polyp like growths etc. So, the tests for cervical erosion are sufficient. If you are having back pain, pelvic pain with period problems, then maybe you could be having endometriosis. Back pain and pelvic pain could also be due to adhesions in the pelvis, where the internal organs would have become attached to each other by strands of thin tissue. I am assuming that your doctor has ruled out other medical and surgical causes of back pain (slipped disc, disc degeneration, back muscle strain and other orthopaedic problems) and abdominal pain (kidney pain, cystitis, colitis etc). Endometriosis can be identified by ultrasound. But the best investigation to diagnose endometriosis or adhesions is by laparoscopy. If your gynaecologist is suspecting endometriosis, she may want to try you on medications first, before asking you to get a laparoscopy done. A plan that you could follow could be to get treated for the cervical erosion first and see if your symptoms settle. If it does not, then you can consult your gynaecologist again and ask for further investigations. I hope this answer has been helpful to you. Thank you Regards Dr Sunita Sayammagaru