Braxton Hicks vs real deal

Caiti

This is absurd being my third pregnancy and all but I don’t recall having Braxton Hicks with my first two. I have had very frequent BH all day long- I am 36 weeks 6 days. They are happening around 5xs an hour. Sometimes they start in my back and come around and sometimes it starts low and moves up in my uterus. How the heck do I know if it is a Braxton Hicks or a real contraction?