Are BH painful?

I think I’m having BH but I’m not sure 😭 my belly keeps tightening up especially higher on my belly. She’s not moving so I know it’s not just her moving around.

I went to show my husband and my stomach relaxed and then when he touched me it got hard again so he knows I wasn’t lying. But it’s not painful so I don’t know!! The last two I had ended with a shock/small pain under my belly by my vagina.