The liver is an amazing organ and can repair itself to some degree, but not when pushed too far.. and asking it to handle APAP and alcohol all at once increases the risk of an overdose, and in the long term increases the risk of permanent liver damage.
The sequence goes like this: fatty liver (reversible) > hepatitis (not the infectious kind, just swelling of the liver - reversible) > cirrhosis (scarring, shrinking of the liver, destruction of the liver tissue, irreversible) > end stage liver failure (need transplant or will die).
It is often painless and jaundice is a late sign so the only real way to know if you have done any damage or not is to get a blood test and possibly a liver ultrasound as well. if you are concerned I would visit your doctor. Hopefully you are fine, but it is worth getting it checked I think, for peace of mind and to pick up any potential problems early..
If you are drinking every night this increases the liklihood of damage as you are not giving your liver a chance to repair itself really.. you are also sailing very close to alcohol dependence, and are likely well over the weekly recommended amount of alcohol.. I know most of us tend to be, hah, but there is a point where it does become dangerous and this point varies from person to person. Using any drug daily, especially one with the potential for physical as well as psychological addiction, is a slippery slope I feel..
Good luck
