Braxtons or...?


So, I will be seeing my Dr in the next 2 hours. I woke up at 1230am this morning with what I thought was Braxton Hicks because my stomach kept tightening without any pain. Around 130 I started having very minor deep Cramping with the tightening but again, I could walk and talk through it. Although everytime I tried to sleep the tightening would wake me up and I've begun to feel waves of nausea as well as diahrrea. It's now 1030 and the cramping and tightening hasn't stopped and happens about every 10 minutes but it's also not painful, just annoying. I'm 39 weeks and am due around the 15th.

During my last appointment I was 4cm and 85% effaced. Could this be more than just Braxton's and false labor?