Hello! I have a mooncup (uk) size b which I'm not allowed to use for another 4-5 years or so (my mother is afraid that it will tear up my insides even though I've tried telling her that it's not possible). My question is how long can a menstrual cup last if left alone? I do take it out once in a while to play with it and mourn my 'loss'. It hasn't even been washed yet. Is there a chance of it degrading from lack of use or dirt from my fingers? Sorry if this question is weird.