I had a lot of your symptoms so I saw a doctor.She put me on medications and they helped greatly.
I've been where you are. Afraid to leave the house. I still have the chocking thing going on, it's call dysphenesia or something close to that. And I've been sober over six years.
Things are better now, and they can be for you, too. Just remember, it's no reason to pick up a drink.
You're not alone. I suffered even worse symptoms then you describe and made it through. You can, too.
Again, seeing a doctor may be a good idea.
Best to you.