Yes, poisoning yourself everyday tends to have negative health effects on most people, mentally and physically. Fortunately, you're alive and you have still turn your health around. I noticed you wrote "PLEASE HELP" at the end of your post. If you want advise from people going through the same thing you are, hit up some AA meetings. What harm could it do?
You really need to get yourself checked out by a doctor for answers to these questions. But the short simple answer is yes, alcohol does compromise your immune system. But more than likely if you've been a daily heavy drinker there are other, more important things to worry about such as keeping sober and increasing your overal health.