33w4d - possible to ‘drop’ so early?

This is my third, so you’d think I’d know lol my first I was just big big and didnt ‘drop’ until the contractions started. And my second was a 32 weeker.

I know that this baby is head down, and that I am smaller than most for this far along (smaller than with my last two too). But is it possible for baby to drop already?