Hello, I got a prolapse (rectocele) after the birth of my first baby (forceps and a bad tear). I felt the same way as others have described, so depressed and like my body was broken. I went on to have two more babies, all vaginal births, though no more forceps thankfully! In between each birth I rehabilitated my pelvic floor and it got so much better. The NHS physio was really helpful - you can self refer.
The most useful thing I did was these exercises www.hab-it.com/. The one called Hab-it Pelvic Floor Exercises Digital Download that costs 12.95 dollars. I cannot describe the difference it makes. When doing them regularly I notice such a difference. There's loads of information as well on her website.
I definitely found through my physio and the hab-it exercises that working on the whole pelvic basket made a massive difference. When I strengthened my deep core muscles and bum muscles it improved my prolapse. So it's not just the pelvic floor muscles that will help. Paying attention to my posture also really reduces my symptoms.
Don't despair, it does get better. There are things I don't do as I know the discomfort it will cause and potentially more damage , like going running or high impact workouts or carrying heavy stuff. But for everyday life, running around with my children, carrying stuff, sex etc there are no issues. As long as I remember to do my exercises regularly (kegels and the hab-it ones), avoid stuff that I know aggravates the prolapse (eg going for a run), and making sure I don't get constipated.
Also something that really really helps, and especially in the first year or two, is lying down occasionally during day to give the muscles there a break. Literally just five minutes makes a difference.
I think it takes a while (took me a couple of years....) to work out what works for you to be able to manage the prolapse to the point that it doesn't interfere with life. Paying attention to my body and adapting things dependent on how it feels also makes a difference. Eg if it's the time of the month I feel mine most or I'm very tired or I haven't had a bowel movement recently, I take it easier eg no long walk or heavy lifting, and I will try to fit in a few minutes here and there of lying down to take the pressure off.
So essentially the prolapse remains, but with management it has a pretty minimal effect on my life. I hope it's the same, or better!, for you. Give it time and work - mine took a couple of years and lots of exercises to get to a place where I feel it doesn't interfere with my life.
Good luck!!