37weeks pregnant Braxton hicks.

So I am 37 weeks and 4 days pregnant. For the last 2 days I have had Braxton hicks on and off quite frequently through out the day. They aren't painful but very uncomfortable. I have had to pause and let them pass before returning to my work. Is this normal? I plan on calling my doctor tomorrow but I have the late night thoughts going on and so I was wondering what everyone else's experience was.