Braxton Hicks or early labor contractions?

I’m 37+2 today (FTM) and This morning I woke up and had what I thought could be “lightening crotch” but now that I looked that up I don’t think that was it. I had strong pains in my lower abdomen like where my pelvic bone is. When I’ve experience Braxton Hicks before it felt different. Do you think this is early labor contractions or BH? They stopped after 30 mins. How long did you experience these contractions before going into real labor? I lost a small piece of my mucous plug last night with pink blood tinged so I’m being hopeful that it’s coming soon!