Megs I have a prolapse and saw a physio she did an internal which although it lasted maybe 20 mins it was only at the opening not like the one do where it feels like their whole arm lol
During the internal she felt the prolapse and other muscles and told me about the damage to the other muscles and helped me learn to do my exercises properly and told me how each muscle was doing during the exercises so although I had a prophase she was able to identify another damaged muscle
She also taught me how to avoid making the prolapse worse with correct toileting etc..