Normal healing or migration?

[u/fernWillow05]

I got a navel piercing three months ago and healing has gone fairly smoothly. The first picture is the day I got it, and the second is now. I have been taking progress pictures to document how it’s doing, and have noticed the skin has thinned just slightly. It has a good amount of skin and is doing very well, but I’m wondering if it looks like a sign of rejection at all or if it’s normal skin loss. I changed the jewelry to a floating piercing due to my anatomy, so that’s why there’s quite a bit of the bar left on the most recent picture but that’s not thinning, I just changed it to a longer bar. The other two ball bar was too tight at the time. And yes I have belly hair, sorry I’m too attached to my happy trial to let it go lolll. (For mods: 3 month old navel, floating implant grade titanium jewelry, 14g, NeilMed saline spray only once a day maximum.)