I would definately call the hospital and get this checked out. I had a hind water leak which barely let any fluid out, only when I was laying down and just enough to leave me with a damp pad overnight (definately not sopping wet). I also thought it was nothing, but finally decided to get it checked out after I had a tiny trickle when I sneezed. Turned out it was amniotic fluid.

If you are leaking you want to confirm it asap because there is a risk of infection which you really don't want to take. And if it turns out that it is nothing, you'll be glad you know for sure.