31 weeks pregnant

Kailyn

So this is my first pregnancy, and I just have a question!

Every time I empty my bladder, my stomach gets hard and tight like I’m having a BH. It’s never done this before. All last night I had really really bad back aches and just cried all night. I thought it was just ligament pains . I was just wondering if it is common for your uterus to get hard after emptying your bladder? I see my OB tomorrow but I was just wanting to ease my mind for tonight.