Hope it all went ok! I looked this same thing up on google (never a good thing) when pregnant as I 'thought' I had the same thing happening. It turns out I had an ugly, black looking skin tag growing on my neck The doc just pulled it right off. I was honestly expecting the worst but was glad I went to get it checked out.

My research did tell me that they can change though, but it's still good to get them checked as it's better to be safe than sorry!