Hi looey and welcome.
I'm by no means an expert but I have experienced the racing heart fast pulse which is so scary and makes your anxiety worse . Just remember that the alcohol did this to you so staying away from it will allow you to never feel like that again.
I have found personally the addiction is a very slow process, 10 years ago I would never have woken up and start drinking a litre of vodka at 11 am Saturday morning. It takes a lot of time and effort to get that bad and boy did I give it 100%.
Not every day but when I drank I gave it my all! I'm back on day 3 after a relapse so there are plent of people here in the same boat. Good luck my friend!