Also, I play lacrosse and I go for runs alot. My cup always seems to leak then too. I find myself quickly putting in a tampon at the fields because my cup leaked on the ride there. I just can't trust my cup to last the whole game where I'm running up and down the feild with no possibilty of bathroom break to take a look-see. Sometimes it leaks like normal(at the house) and sometimes it leans more towards the 'waterfall" side.
I'm pretty positive 100% sure I'm getting a proper seal. I use the push-down fold to insert and wait for the little pop on the inside. Then I stick my finger up next to it until I can hear the air noise. Then I spin it around multiple times until it gildes easily. And after all that I run my finger along the bottom to make sure it's all inflated with no dents. I even wipe after to try and get the leftover stuff below the cup before it rains on my parade.
When I take it out it's like 1/3 to 1/2 full. Goopy stuff is usually always in the holes so I don't know if that has anything to do with it. I read about the cervix thing and I can touch mine with my index finger pretty easily some of the time but other times my cup drifts up to point where I have to bear down to get it back. I don't know if my cervix is high or low or how to even tell.
Sorry for the overload!! I just wanted to make sure I included anything and everything that would clue someone in on my problem. Thanks in advance :)