hope i havent messed my bb up

Had tt Monday and I took my binder off today just to get a look at what was going on and I noticed that some of the skin on top of my belly button was poking out.  I hope I didnt mess it up since it wasnt like that 2 days ago.  anybody had this happen?

Is it skin or is it glue?  I had glue everywhere it was hard to tell what was glue and what was actual scab/scar.  If you're really concerned call the PS.  Never hurts to ask the Dr.