contractions?!?!

34 weeks tomorrow. FTM
Past hour off and on I've been HURTING, all caps because it's AWFUL. 
I've had BH for a few weeks now, this is worse! 
Feels like gas/BM cramps but worse and I don't need to use to the bathroom, I've tried. 
Feeling nauseous, getting a headache. 
What's going on? What should I do? Haven't yet called doc because I'm trying to wait it out and see if it passes. Also my hospital is an hour away and don't want to waste a trip. Ughhhh