Well I would first go to your doctor and be totally honest about your drinking and your concerns, your doctor can do blood work to check your liver enzymes.
I can tell you that I had a swollen & very tender liver when I went into detox, it was diagnosed as fatty liver.
With in one week after I quit drinking the tenderness was pretty much gone, after 90 days of not drinking my liver enzymes were back to normal meaning I no longer had a fatty liver, it was functioning properly, the swelling was totally gone after 6 months without a drink.
My health experience more then likely will not be the same as yours, only your doctor can tell you what is up.
I will say this, no matter what, if you do not drink you will not harm your liver any worse and unless you have cirrosis of the liver it will heal, even if you do have cirrosis, the rest of your liver will heal.