Braxton hicks?

First time pregnant momma here! I’m 27 weeks and started feeling what I think are Braxton hicks but i’m not sure. It feels like a gradual increase of pressure super low, pelvis area - lasts for maybe 3-4 minutes and then goes away. Not painful at all, just large amounts of uncomfortable pressure. Feels like my bladder could be involved and is being squeezed and could burst like a water balloon any moment when it happens 🙈

Thanks in advance for any advice!