Please..listen
You must stop looking up things on the internet...that only makes it worse.
I never had GAD or Panic attacks untill i moved to a new place.
I've been here 3 years now...I moved from a small Island to the city.
Sometimes I want to go back to my Island..I lived there for 23 of my 26 years.
Part of it is I am away from my family..the other part is not having met many friends out here.I totaly understand the breathing thing...I used to wake up gasping for breath.I think it's the adrenalin that does that...I yawn all the time too.Except what you have...your not alone...Breath deep