I noticed it a few days ago and it's been driving me mad. I'ts not getting any bigger, it doesn't seem to cause her any pain. It's the size of a big pimple, but no white head. I push it around and it goes back in place. I can't imagine it having always been there and me not notice it, that's just not likely, I know every inch of Uni.
Vet said just what I thought. If it's not causing her pain and doesn't seem to be getting bigger, just keep an eye out until something changes. But it's bugging me. Do any of you think you may know what it is? I would take a pic, but it's just a skin colored bump, not red, or anything.

I'm making myself think it's getting bigger, but then i reassess and I know it not.