true or false labor?

Brittany
I'm 38 weeks today. Last week I had mild cramps and back aches on and off and Friday I was 3cm dilated and 50% effaced. This Is #2, but I honestly don't remember what contractions etc felt like with first except for the back labor. 
Now since I woke up this morning I've had moderate constant cramps and back ache and Braxton hicks are getting stronger. I've lost parts of mucus plug over the last week. My dr told me last week she doesn't think I'll make it to 39 weeks. I've tried taking it easy, moving positions, drinking water today and it isn't easing up but not getting worse yet or closer together. What do you all think I should do? Worth getting checked or just see if it progresses more? 

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