Am I an alcoholic

Yes you can be an alcoholic even if you do not drink daily. It is not so much the substance and time as the effect it is having on you. You are managing your drinking because you know you need to go to work. But you even mention that you know if you didn't have to go to work your situation might get out of control. Alcohol or any addictive substance or behavior becomes a problem when it interferes with work, family, physical or mental health. We can go a long time without seeing or running into the consequences of our addictions. Denial is addiction's best friend. You were concerned enough to ask about it. That tells me you know deep down you have a problem or the beginning of a problem with it.