So I'm 37 weeks 6 days...and for about the last 2 hours My stomach will get hard and then stop. and…

So I'm 37 weeks 6 days...and for about the last 2 hours My stomach will get hard and then stop. and my sides are in pain...not like I'm dying pain...just like uncomfortable pain. and for the last couple days I have been having more discharge then normal...nothing with blood though. is it Braxton hicks...or should I call my Dr? thanks ladies!