fully engaged at 33+1

Alicia
Anybody else?
I've had a lot of pressure for the past few days and this morning had a last minute quick ultrasound to determine if my babe was still breech. Sure enough, it's not, and it is fully engaged and "locked and loaded" as my midwife said. 
This is my second. My son came at 38+6. My midwife didn't say this means I'll go into early labor, but she advised me to be ready. 
Has anyone experienced this, this early on, or is experiencing this now?