Have you seen this site, Mammamo? http://www.wholewoman.com/
It is a really beautiful and informative site for women with prolapse issues. I never knew how common this is! I have a pretty mild rectocele post-birth with Luca. I work as a produce department manager at a health food store and was lifting very heavy things pretty far into my pregnancy...I didn't realize how it could affect me, but I think that's when I compromised my pelvic floor.
This site has lots of exercises and suggestions for pelvic floor health, and also a forum!