Braxton Hicks vs Contractions

I know this gets asked a lot but I honestly feel clueless on what is real or not? The last two evenings I've been experiencing really bad back pain to the point I'm finding that I can't sit and that I'm swaying from side to side and trying to breathe myself through the pain. Last night was the first time that along with the back pain the top part of my bump was rock solid and was so uncomfortable. During the day yesterday I kept feeling like I was leaking down below but when I wiped it was just discharge. My boobs are leaking more than usual and are super duper sore. Could these be signs that things are going in the right direction? I'm currently 37 weeks.