Do you have bad cramps? With me, using the bathroom really aggravates my menstrual cramps, probably because more pressure is being put on the swollen sensitive areas. Maybe it's that?
I dont have cramps anymore because I dont get a period anymore because I am on the continuous birth control pill. I did use to alot.. They were so painful.
I am almost positive its possible that you have endometriosis and when it involves the rectum it is not good.
I would find a good doctor who specializes in this disease.
Have you had a transvaginal ultrasound? Have you had them check inside your vagina and rectum for nodules? They have to really go deep to feel them..
Like I said i had so many of those done and they were missed everytime until I found this doctor and right away that was the first thing he did and found it.
Everytime I would have a pap it would hurt so bad. When they did the internal omg it hurt.
Enough was enough I researched and research but I had other symptoms and issues so it was being masked.
Finally I was diagnosed with Stage IV endometriosis. I had severe endo with a rectovaginal nodule.
Since my surgery my pain is gone pretty much. I am on the continuous birth control pill now and dont get a period so I am not sure if the pain would still be there if I came off it.
I hope some of that helps