Am i leaking amneotic fluid?

im 37 weeks pregnant on tuesday. I just emptied my bladder, sat down for a few minutes and sneezed, and fluid came out. It was clear and had no scent to it. As the lateness of the hour calling my doc isnt an option. Should I wait and see if it continues or just go to the hospital? Oh yea and my Braxton hicks, tummy tightness has become uncomfortable, not painful, but I have a high pain tolerance. And none of the women in my family have ever recalled feeling labor pain until it was time to push. The tummy tightness is sparadic but lasts up to 45 seconds. so yea, tummy tightness and possible leak. what do i do at midnight on a saturday evening?