Update:
I finally changed the bandage on my bellybutton. When I took it off, there was a cup-shaped scab in it, almost like a flower. It was the biggest scab ever. Most of it flaked right off, but there were still some parts where it hadn't healed yet and needed to remain on, so I left it alone in those areas. When it was off, there was a little line running along the side of my bellybutton outwards to my stomach, so it wasn't a dead center cut like I'd thought. There was a little yellow goop and more scab bits inside it, which I removed with sterile tweezers, and the bandage I pulled off smelled funny, but I think that was from sweat and dead skin collecting in the indentation, rather than an infection. I poured hydrogen peroxide into it and lay on my back until it stopped bubbling, and then I wiped it out with rubbing alcohol, which stung like a motherfucker. Then I rubbed some Neosporin on it, and I put some gauze on, and covered it with the waterproof plastic film. I was worried it wouldn't hold because it was puckering, so I added a larger one on top of it. It still stings but is otherwise okay. It took me nearly an hour and half to do everything.
Offically, it was the coolest scab ever. It felt incredible to peel it off. Hell, it was almost worth all that nausea over this past year. Now my bathroom sink has a lot of swabs with blood spots on them from where it bled and I cleaned it. Holy shit was that fun.
I got a picture of the scab too, but sadly it was blurry as I used my cell phone. Ah well.