I'm awake because I'm experiencing what feels like major period cramps... It hurts enough to wake me up. It is more of a constant ache down low (where my uterus used to be) than my stomach having timed intervals of pain (what I imagine contractions would be). Does anyone know what this is?

Insights:

I'm 39 weeks, FTM (hence being clueless)

Lost my mucus plug a few days ago

Four days ago I was 1 cm dilated, 50% effaced, station - 2

Water hasn't broken

Had sex last night