Originally Posted by
romanerin2011 
I feel maybe I should tell my wife of everything I've done as a drunk and this recent relapse but then very likely loose my entire new family over something that is not of me.
Given that there is a new baby and mother involved, I would encourage giving some thought to that idea before actually acting on it. Honesty is usually nice, but not in the service of causing unnecessary pain and destruction to others.
You must absolutely get tested for any and all possible sexually-transmitted diseases as soon as humanly possible, however, and regularly for a while thereafter. Check with doctors about how long that should be given your family situation.
You must not put your wife and child in any personal danger from your actions.
That child will need its mother at full capacity for many years to come, and there is also a risk for him. No excuses on this count.