I'm annoyed that my gf said I should stay away from her during a big celebration because I had a cold
Don't you think you should stay away if you are sick?
I'm annoyed that she doesn't want to talk with me because of my condition.
It's understandable to not want to be near someone when they have a cold. She is probably trying to avoid getting sick from you.
She's mean. I'm going to dump her ass.
You should be considerate, not everyone wants to be infected by your germs. If you have a contagious disease and she has a compromised immune system it can end really badly. You should have some respect.