I drank similarly to you and quit cold turkey immediately following a night of binge drinking. The first 30 hours or so were the worst and spent in bed, followed by a few days of nausea, mental fog, headache, etc - but I was still able to go to work and function enough to get by after the initial first day or two. I drank for 10 years. Didn't feel quite right physically until about a week but fought through, and you can too! Don't psyche yourself out
, all the best