Braxton hicks

Any tips for falling back asleep in the middle of the night after getting woken up by Braxton hicks?? Every night I fall asleep and sleep for about 2 hours. After 2 hours I wake up and my uterus just feels so tight, with a lot of period like cramping. I'm 37 weeks now and sleeping is getting so difficult. That plus the anxiety and I'm just really counting down the days until baby is finally here!