40 weeks, lost bloody show last night, having braxton hicks 3-6 min apart?!?!?

I'm exactly 2 days from my due date, I lost my "bloody show" last night, about 13 hours ago. And I woke up about an hour ago and I've been having tightening every 3-7 minutes. They arent' painful(maybe a teeny bit) but my stomach gets tight and kinda looks/feels distorted when it tightens. I called the hospital and they said call my OB. What would you do? Does this sound like labor, maybe false labor? Just braxton hicks?