Contractions?

I’m pretty sure they’re just Braxton Hicks because they aren’t super painful, but I’m getting them every 5-20 minutes (not super regular) and they’re so intense that it causes my back to cramp and makes me feel like I’m going to shit myself (sorry, tmi). I’m 37 weeks Saturday, so I still have a while to go before my due date. Is it normal to have so many Braxton Hicks? It’s been like this all day.