I've been using the mooncup for a few years now and really like it on the whole but am starting to get a little concerned by something a friend told me a few years ago - she said that it caused her to prolapse (she had quite recently also delivered a very big baby so that would have also contributed!) but I wonder if long term use of a moon cup does actually weaken the pelvic floor and I'd be interested to know what everyone else thinks - I really hope it doesn't as don't want to go back to tampons...