It's ONLY one glass of wine!!!!?

So, Lately I have found myself drinking a glass of wine ( Reisling )
every evening. Actually, I crave it – but it wouldn’t be a big deal if I didnt drink. Sometimes, I will have 2 glasses a night but that may happen only once a week but not every week. Is this the beginning stages of alcholism? How many glasses and how often is normal?