Sometimes, if i am doing anything sexual, with my girlfriend or even by myself they tend to go up like they are racing for my stomach or something. like at times it will be up next to my penis (meaning not under, where they are supposed to be) and ill have to stop to push them down...

it mainly happens if im on my back. but it scares me. and i wasn't sure if i should get this checked out or what?

it doesn't really bother me, its more the fear of what it could mean.
like i said it doesn't happen all the time, just sometimes.