With my first three pregnancies my belly button never popped out. It got shallow with my third but was normal my first…

With my first three pregnancies my belly button never popped out. It got shallow with my third but was normal my first two pregnancies. Well now at 31w4d it's about to pop. I feel it getting shallower everyday and my hubby keeps pointing out how the scar from my belly button ring has gotten higher and higher. Well I noticed today its almost flush with my belly. It feels so weird!