AITA for running straight into the toilet from work while my partner was waiting to hug me?

Long story short, I was bursting as I was reaching home from work and ran straight into the toilet as my partner was waiting in the kitchen for a hug from me.

In a minute I was reaching out to her asking “hey darling, how was your day?” and she goes, “you could have hugged me for 2 seconds before you rushed into toilet” in a disappointed tone.

I don’t know why but that tone quickly escalated me and she could probably saw it in my face and I went “are we going to have discussion on this?” This has led us to have an argument on how silly it is and a few things related and unrelated to this have been brought up.

I was wondering, how did we end up frustrated of each other for basically nothing and AITA for reacting that way?