Hi there, this sounds more like a prolapse of vaginal wall from bowel area since so close to vaginal opening. I've had one since my 1st baby. I would suspect it's more than likely related to the sudden drop in estrogen causing vaginal weakness. So yes relates to the surgery but I don't think waiting for any length of time would have changed this. I'm hoping your surgeon is an oncogynaecologist who will understand all your relevant risks. After my 1st baby I used vaginal estrogen cream short term which improved it a little. It varies now and no better or worse on aramatose inhibitor.