Please HELP ME…

I’m very new to this anxiety. Since last night and all day today I’m having a chest tightening and hard to breathe. All because of anxiety. I went to hospital a few times. They said my heart and all labs are fine. Just because of anxiety attack. Last night and today my chest/breathing is killing me. I don’t know how to handle it. I kept myself busy all day, it seems not working at all! Please help me. Anyone experience this ? If you do then how do you deal with it or make it go away ?!! I can’t bearrrr it.. 😔

Thanks!!