Week long panic attack

Repost from same post in AnxietyHelp, to get more help.
Last monday, I had to bring my cat to urgent care. We still don’t know what’s wrong a week later, but my panic hasn’t stopped since. I am shaking, heart beating fast, not eating, not sleeping, feeling out of my body, can’t move, can’t talk, can’t go out, all of this literally 24/7. I called many people for help, called the social services support line, but nothing works. I am spiraling, I feel like I am losing my mind and myself. Usually my panic stops after a day, but this feels like hell.
Anyone has had the same thing happening? What did you do to help?