A sort of round yellow ball over each? It sounds like kind of stent setup I had. Getting them removed didn't hurt, though it did feel a bit weird. My nipples were completely flat under the yellow bit, not up into it at all. It looked like there was a thin layer of something left over them, but that wore off on its own.
I was pretty worried; I don't like being touched period, much less there, and thinking about stitches was already making me nauseous. It was a pretty quick process, though. I made sure not to look until the process was completely over, and I was sort of relieved to realize I couldn't actually feel when that was.
Good luck at your appointment!