I was a mess of anxiety today

I nearly lost it at someone, and could feel myself shaking a little for most of the day. It felt like some little part of me inside me somewhere was anxious about something, but I have no idea what part or why it was anxious. Right now it's making me feel like I want to cry, but I can't.

I know nobody cares about my posts, but hopefully writing it out will help me figure it out.