Braxton hicks sign of labor?

So I'm 35 weeks and I've been getting Braxton hicks literally all day. They are painful but not excruciating and they aren't coming regularly so I haven't gotten concerned but it's been ALLLL DAYYY. And it's annoying and sometimes takes my breath away. Just wondering if this sudden increase in them means maybe I'm going into labor soon? I've been perfectly hydrated and everything..