Welcome to SR, shellcrusher! There are lots of good people here who understand your situation and are ready to help in any way possible. I'm sorry you are dealing with this and with a little one, I know how difficult it can be. Stick around and keep reading and posting. There's a lot of experience, strength and hope to be found here.
My main concern is with your son. Does you wife work or does she stay at home with him? Does she drink when she is alone with him? That would be my main concern.