Permanent Liver Damage due to Excessive Alcohol Consumption?

I am a 21 year old male. About 4 months ago I went through a bout of depression after a rough breakup and I began drinking moderate-heavily (4-5 bottles of wine a week). Up until about a month and a half ago I cut back to strictly weekends and now its just no alcohol period. The question I am asking is that is there a possibility that I have done permanent damage to my liver? Over the last 2 months I have been oversleeping almost every night and waking up feeling like I hadn't slept at all, even with adequate sleep. I have also been experiencing joint pain as well as very foggy memory and lapses in concentration. I fear the worst. Could this be permanent? I am currently on various supplements and I was throughout this entire drinking period. I mainly take Vitamin B complexes, a multivitamin, omega-3 oils, and vitamin D. Also I went to a doctor and had a blood test (mainly concentrating on liver function) and I was mostly fine other then slightly low levels of bilirubin, he told me to cut back which I did but my symptoms persist.