@TwittleBee. I’ve had a ton of back ache and BH. The BH is aggravated by getting even slightly dehydrated and it’s been sunny. Wind makes it feel cooler though so have you been drinking enough?
Mucus plug also does sometimes partly go and rebuild does it not? Sure I read that somewhere.
Phone the midwife to check but I’m feeling pretty optimistic for you that you and baby are both fine. 💐