Braxton hicks or contractions?

Am
I am 37 weeks, and have been having what I think are Braxton hicks, but, when it happens I can feel pressure in my chest / head / cervix as well.. It's very uncomfortable and they last about a minute long, sometimes longer.. My head always feels like I'm basically doing a head/handstand. They are random and not really timable. I told my ob and all he said was that it was weird.. But nothing else. He's that kinda doc that says everything's normal, no matter the question and doesn't do anything.. So he doesn't help really. Just wondering what you ladies think it might be :) thanks

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