Is this behavior from my gf normal? What do i do?

Dating for 2 years. She has my location and periodically she’ll check it i guess? Whatever, but whenever I’m out somewhere i don’t normally go she just instantly accuses me of cheating. No questions, just instant accusations.

For example yesterday i went out to lunch with this guy i used to work with, he’s in a line of work im interested in so i wanted to pick his brain. Gf just texts me “guess im single now lol”. We’re both 27. Feels like im hs with this sh*t sometimes.

I literally just told her “you need to understand that this type of thing is making me so exhausted. It’s at the point where I’m on edge every day because i have no idea when the next accusation or something else is coming”. And all she said was “you’re acting like a committed murder take a deep breath”

Idek what to do anymore i can’t take this stuff anymore but maybe im overreacting?