Should i call my dr or wait until the morning??

I’ve been having mid upper back pain for the last 2 hours. I have done a lot of cleaning and different things today so I’m not sure if that’s why it’s hurting or what. But nothing seems to help I’ve tried drinking water, laying down, sitting, and standing. It’s hurts so bad it’s breathe taking almost. What should i do? I’m 34 weeks and 4 days