I know we are not doctors and I know I should call my OB (I have, but haven't spoken with her, yet)...

But, how many Braxton Hicks contractions are too many?

I am 27 weeks, 4 days and for the past week plus have been having them every day, more frequently at night. I started paying closer attention to their frequency the past few days, and I have them multiple times an hour in the evening...even up to 4x an hour (even when lying down or resting). They are not painful at all - it's just that my stomach/uterus clenches and gets hard for about 10-20 seconds then releases.