I would say that it is possible that it is from the withdrawal. Reading by your post I would guess that you stopped cold turkey? The proper way of getting off benzos is to taper off slowly. If you are still having issues I would suggest to not touch any stimulants that would aggravate your symptoms such as caffeine and alcohol. The brain is healing itself at the moment and the best thing that you can do is to take care of yourself eat healthy and exercise. Have you spoken to a doctor about your situation? If you haven't it is good to go to a doctor so that you can get help from your symptoms and do the steps on how to deal with them.