Hi Group: I have been using the L sckoon cup and love the capacity but it causes pressure down there and I have to pee all the time. I have a L Meluna, ruby cup and femmecup. The femmecup isn't quite as bad and the meluna and ruby I haven't tried enough to determine. They are almost all the same length 50-51mm. I am 26 have had no kids, virgin and have a fairly heavy flow so capacity is important. When I was using disposables I used a heavy tampon/pad and had to change both in 30 min. to an hour. What do I need to change to make cups work? Thanks for your thoughts.