Braxton hicks???

This is my second baby and I don't quite remember how they felt ! So that last two day at around 6pm I will start to have what I think are Braxton hicks ! I'll feel some cramps  in the front and my bellys hard and I also get back pain ! And I go lay down and after about an hour they go away ! So I'm thinking they are just Braxton hicks ,oh and I'm 34 weeks !