Just now I'm laying down and feel pressure in my vagina, possibly on my cervix even though the baby isn't very low in the position I'm in. Could this be a sign of labor?? It comes and goes but has nothing to do with the baby's movements. It sort of comes in waves like contractions do but it isn't painful. Is this maybe an urge to push....? Sounds funny since I don't feel like I'm in labor but it's almost as if I'm mildly pushing without having any control over it. 

Honestly, even a guess would be great. Just give it your best shot.