Sorry to be blunt, but there is no sugar coating this.
Can you cut down? If you really have stomach problems
, you need to stop and you should also see a doctor immediately. I don't know your level of alcohol addiction, but some withdrawal symptoms can be severe if you've been drinking a lot, so please be careful. Consult with a doctor, and stop drinking - your body should gradually heal with abstinence from alcohol, and judging from your family history, you're headed for trouble anyway.