Welcome sonkien and congratulations on your decision to quit! I deal with anxiety too and used to try and "self medicate" with alcohol but eventually that stopped working too and my drink Actually made it worse.
Initial detox can be rough...as others have mentioned, don't be afraid to seek medical help if you need it. And regarding your anxiety, of you haven't sought help for that specifically consider that too down the road.
You have made a great choice, and things will get better!