Pre-story: we've been seeing each other for like 5 months now so its not that we don't know what each other means by what they say.

My girlfriend has a very high pitched voice and she usually says things very loudly even if they're just casual, like asking me to walk over or saying "OH MY GOD" or if she drops something she'll scream etc.

She was staying over this weekend. I had even asked her prior, made plans, and bought tickets to tonight's music show and tomorrow's brunch music show (all which I paid for).

We were playing overcooked together sitting next to each other on Xbox and she screamed a couple times in my ear but I didn't say anything. We then had dumplings cooking on the stove and she said HELP they're stuckkk! So i walked over and took them out casually saying "you know you don't have to scream for everything right" and she flipped out on me saying "well i like screaming so if you don't wanna hear it ask me to shut up!" and proceed to lock herself up in the bathroom. I followed her to try and talk to her. My hand was in the door and she shut it with it inside, which hurts pretty bad.

She came out after a while and left. I tried to talk to her but she started being aggressive. I feel very sorry that I said something that hurt her. My point being, if everything is made to feel like urgent, or emergency by a loud call. How am I supposed to tell the difference from when she actually does need it vs normal?

I don't know how to feel and I'd like a third person perspective. Am I the asshole?

Edit: thank you so much for all your support and advice. I appreciate it more than I can express with a reply to each! I'm doing some real thinking about our dynamic..