I've been using a large Meluna cup for the past 4 years, but it has always been hard to get it to open inside me. I don't want to spend forever in the bathroom trying to get it to unfold, so I think I should try a different size. Would it be better to go a size down or to try the harder/stiffer cup? I am worried about that being uncomfortable though. Background: I am 32 and have never given birth. I've been told I have strong vaginal muscles, but I don't do kegels or anything. Also: does anyone have a coupon code for Meluna?