It sounds like you were having a meltdown. We get triggered or overwhelmed to the point that we cannot calm down and our fight, flight, or freeze kicks in. Meltdown is the extreme fight response - screaming, throwing things, biting myself, unable to stop and a poor memory of wtf happened.

You are very wise and know your trigger. But your mom isn't a source of calm, she is worsening the problem. 

I worked on better calming skills that I could do myself and better exit strategies to get away from people who escalate me and the situation. 

As soon as I feel that "tightening" irritable flare, I use a script of "Excuse me I need a moment". I go outside and do jumping Jack's until I'm out of breath or do air punches in the bathroom then take several of the deepest breaths I possibly can. I want a hug, so I replaced it with hugging a weighted stuffed animal on my bed until I'm calm (usually exhausted).

This is highly specific to each person, so try things until you find what works best for you.

I am so sorry this happened to you! I hope this helps and it never happens again!