Just tell the Dr the truth. Mine laughed at me and I told her. She replied "I'm only worried about real drugs that you snort or inject". Doctors know that weed is not a big deal health wise. She said she is more concerned about alcohol by far, so dude, just tell it like it is. Word of advice, blacking out 4 days a week due to alcohol is bad for your liver and when that starts going, it really sucks! You feel like shit and you turn all yellow.