Since alcohol is a major cause of liver disease and the use of certain pain relievers is too, it's pretty obvious that you need to limit both. Also, read the prescription instructions which most likely issue caution not to mix that drug with alcohol, that's for a reason. Your over use of alcohol is of great concern, you might want to reconsider the unhealthy lifestyle you're creating at a young age.
I'm sorry to hear that. I would go get my liver checked out. At least you will know what is going on with your body.