Stomach feels hard? Husband even noticed a difference

Stomach feels hard? Husband even noticed a difference...I didn’t even bring it up to him. I can’t tell if it is contractions really it feels like my stomach gets tight but then again I feel like it is in my head. My baby is on the right side but my husband thinks it is moving more in the middle because my left side felt hard too....but now it feels softer on the left side. I think I’ve had this a couple times to today. Do you think it is Braxton Hicks I never had them yet, I am due on May 10th. I don’t know if it is all in my head which worries me because if it is something real I need to start timing them. I think I’m just going to go take a shower 😂 it isn’t really painful so I don’t know if I should just let it go for a little bit