I was prescribed pregabalin which really helped. Just make sure you see a psychiatrist with your symptoms and they'll help find you the medication that's right for you.
I'm sorry youre going through this, I know full well how debilitating extreme anxiety can be. In the meantime time, just get the best sleep you can. It won't be ideal but your mind and body should just about give you enough sleep to get by and function at a basic level.
Get help from a psychiatrist, in short, and good luck I hope you get this sorted ASAP