If you got an outie pregnant, when did it go away?

I was super skinny before pregnancy and had a cute belly button. It popped out pretty early at 16-17 weeks once I got a little baby bump. Kinda had a hard ridge to one side of it. Anyways it remained all pregnancy and it’s still here. I’m only 1 week and 2 days postpartum but my belly has shrunk almost back to normal. There’s a big crater around where my belly button is supposed to be, but the actual button is still an outie. It falls in when I lie on my back. I’m worried this is permanent. Did yours go away?