Welcome.
20 shots of the hard stuff is alot. I did the whiskey thang so I know. But what I don't know is how your body will react to no alcohol after being so used to it for 2 years. And I'm sure you got progressively worse.
If I were you, I'd seek medical attention -just to be safe. Two assets to sobriety are honesty and safety. Please get help with this and please let us know how you are doing.
Wishing you peace and strength.