Signs of labor?

Currently 40 weeks 3 days, was up and about cleaning and came down with hot flashes and horrible shakes and trembles. Thought maybe my sugar was low so I sat and ate drank some juice. Still experiencing un controllable shaking. I’ve had Braxton Hicks all morning and some stomach cramping, mucus discharge. But no contractions worth timing. Could the trembles be a sign of labor? Thanks ladies!