Is my girlfriend unsupportive?

I dont think she is being unsupportive, but the only thing might be that the crying got annoying. I mean, I know alot of people (guys too) who get annoyed when someone continually cries over something, even if they are being supportive. Your girl might just not have a lot of patience, but that doesnt mean she isnt being supportive, no worries bud, it'll all work out. Just talk to her about it, communication is always the way to go in these situations.