I Stopped Alcohol A Few Weeks Ago For No Reason

I stopped alcohol a few weeks ago for no reason just to loose weight. After 5 days I had a really bad episode whilst riding the car and ended in A&E. Palpating, panick attack, shakes generally unwell. This lasted for some time and then my partner said could it be the coming of alcohol as all the symptoms suggested that. I did not want to stop but it was a habit of a few glasses of wine a night and then weekend. I decided to have a glass of wine and it did make me feel better but I still do not feel well. I wake up and legs and arms shaky and a general feeling of unwell. The palpitations have gone.b the doctor gave me beta blockers but I don't want to go down that route so bought Kalms. I am going on holiday soon but have this sense of dread. Could it be my blood sugar levels that drop