Thnaks Monkey for the advice. I only rarely do Body Pump now when there's no other classes, I found it made my joints ache as I am a part time gardener. However I love Step (4 days a week) and it hasn't made anything worse since the proplapse happened! I've also downloaded all the advice from Michelle Kenway's great website and will give to my instructors. I have had a proper examination and I am being referred to a physio - whenever that will be! Squats even without weights I find uncomfortablel now, walking on flat surfaces fine, walking on uneven ground especially in this snow really uncomfortable, I am guess it's the core working to keep balance? Someone did suggest support underwear, not sure about that. This forum is very reassuring, not full of the scary stories in other places. It's the 'uncomfortable' feeling which is driving me nuts :)