I've been there, and desired to drink, especially if there are no physical issues on a medical report. There isn't a strict agreement on how many days because of metabolism, weight, and underlying issues, but typically after five days, everything is more of a mental/ psychological struggle. In most cases the body feels better before the mind can get stronger. It's the reason for the old saying that the mind makes a better servant than a master. Try your very best to control it.
Stay away from the first drink.