I ordered a small CupLee after experiencing rectal pressure from the Si-Bell. It was better as far as pressure goes and it was easier and more comfortable to remove than the Si-Bell. But it leaks! It's not a heavy leak and I wasn't even entirely sure at first that it was, indeed, leaking. However, I felt a frequent "bubbling" feeling while wearing it, the outside was bloody every time I removed it, and there was some blood on my liner (somewhere between spotting and a light flow). I can also feel that there's a lot of room around the cup when I insert it. Does it sound like my assessment of the cup as too small is accurate?
Note: Aside from the morning after I wore it overnight for the first time, my Si-Bell has never leaked (and I suspect it leaked because it was full).