I'm almost 41 weeks and mine hasn't
Mine never popped out with my first baby. And I'm 30 weeks with my second and its still not even close.
Mine didnt at with my first son now woth my second my bellybutton pokes out so far sometimes ot hurts:( it also just depends how the baby is laying lol
With both of my pregnancies, mine never did. ?? Not everyone's belly button pops out. good luck sweetie