Anyone experienced this before?

Has anyone else experienced where they have a anxiety attack and they pass out?

This is very new and never happened before when I would have anxiety fits. Scared the living shit out of my Husband the other day. A little run down of my anxiety history.

It was bad around age 12-17 but after that it was fine and got better when I met my husband around age 20 . Currently 23 atm but I have never passed out before.