I don't think you are in the minority I just don't think women talk about this to each other.
I too have a bladder prolapse. I'm only 30 and had my first a year ago. It was a long labour with an extended pushing stage.
During my time of the month is the worst for me everything feels heavy and draggy and the prolapse touches my underwear.
It's depressing and I am frequently teary about it. I also mourn the fact I won't be able to play netball again or do any high impact exercise. Or even cough or sneeze without feeling like everything is going south.
I've seen a physio to get an idea of exercises to do but they are not going to resolve the issue. I havn't had it formally graded but assume it's moderate.
This is a bit rambly and all over the place just wanted to let you know you are not alone.