N.W.
Hi Christina,
I had the same thing when I was pregnant last spring. I had a partial outie which became just part of my stomach. For some reason the idea of it stretching into my stomach just made me nauseous and I swore it felt weird. I think I did bring it up to my doctor and they must have said that it wa normal because I did stop worrying about it. I think it was just the sensation that I felt like I was going to burst and my belly button was the cork:) that bothered me so much. Just ask your Dr at your next appt or call the nurse to reassure yourself.
I'm glad you said something, I thought I was the only one that went through that. Good luck!
N. W