There's no way to say what might be going on without a bit of testing beyond what you've had done. But even a few years of hard drinking can have a big impact on the liver. It's an organ you can't do without, so you may want to try to change things around a bit.
Are we talking cirrhosis? I did not abstain from alcohol during this time, I have tried to cut back a bit though and I do not take any other medications.
Basically, it means that for whatever reason it appears that your liver is being impacted. If your doc suggested that you quit drinking while you had the tests and you did, the referral to a specialist might be a good suggestion. However, if you didn't abstain from alcohol and you were taking any other meds (unless your doc specifically said you need to take medication) - including aspirin - during the period of Jan to February, you may want to trying doing that and have a retest done to see if the weekend drinking has and is impacting your liver.