Braxton hicks?? I don't think so. Anyone's opinion please!

I'm 32 weeks and smaller than I was when I had my boys as I've only gained 10-12 lbs, but started out with less fat than when I had my boys. I keep getting this moderate pain above my belly button, sometimes it gets pretty bad. It almost feels like a strained muscle? My doctor was a complete b**** when I asked her about it and she tried to laugh and tell me it was heartburn. I told her I'm not dumb, I know what heartburn is since 1) it's not a burning feeling near my chest/gall bladder and 2)she gave me a prescription for mine at the beginning of my pregnancy and I haven't had any issues with it since. Then she told me just take Tylenol. She couldn't tell me what it is. The office manager said maybe it was Braxton hicks but it doesn't come and go. It is a constant pain, that usually will go away if I do absolutely nothing for a long period of time. Seriously, no movement. I usually try to take a nap. Anyone else dealt with anything like this?