I would drink something like juice or milk and then lay on your left side.
My lamaze coach told me that if it is low in the belly it usually isn't labor but it never hurts to get it checked out. I would be scared about the baby not moving though! My little guy thinks that he is a kickboxer all the time.
Also, they say that diarrhea and frequent bowel movements can be a sign of early labor. You are 36 weeks and some websites put that as full term.