Braxton hicks?

Jami

I didn't have Braxton hicks with my first so I'm not sure if this is what I'm feeling? Sometimes late at night for about 30 seconds it gets hard on one side ( like she is in a ball maybe) but I had some pelvic pressure as well... is that Braxton hicks? I had a c section with my first no I never had contractions. Thanks for the insight