Could it be the beginning of labor!?

Melissa

I woke up feeling extremely nauseous and so I made my way to the rr when I started getting sharp cramps. The cramps over powered the nauseous feeling and when I sat on the toilet it was watery diarrhea (I'm sorry TMI). The cramping feeling hasn't gone away and I believe I'm getting some Braxton Hicks. I'm 38 weeks 3 days, could it be a sign of labor?