AFTER DRINK HEALTH ISSUES. Can be done?

I USED TO DRINK DAILY ABOUT 3 YEARS AGO BUT WHEN LFT REPORTS WERE NOT NORMAL, I QUIT DRINKING FOR 1 YEAR AND WHEN LFT REPORTS WERE NORMAL ABOUT A YEAR AGO, I STARTED  DRINK IN MODERATION JUST ONCE A WEEK ON WEEKEND AND AFTER DINNER WHILE I SLEEP I FEEL MUCH INTOXICATED ,FEELS AS IF I WILL FAINT IN SLEEP THAT DISTURB MY SLEEP AND NEXT MORNING I FEEL HANGOVER,LIGHTHEADED, BELCHING ,LETHARGIC AND MOST IMPORTANTLY I FEEL HEAVINESS AND A DULL PAIN ON RIGHT SIDE MID WAY BETWEEN CHEST AND ABDOMEN . BY EVENING THE HEAVINESS AND HANGOVER GOES AND EVERYTHING REMAINS FINE WHOLE WEEK AND AT WEEKEND AFTER DRINKING THE SAME EPISODE STARTS, MORE THE DRINKS MORE THE HEAVINESS ON RIGHT SIDE UNDER CHEST UPPER ABDOMEN . ON ADVICE OF DOCTOR LFT DONE, FIBROSCAN DONE, AND ULTRASOUND DONE , ALL LIVER REPORTS ARE OKAY . I JUST WANT TO KNOW WHAT EXACTLY THIS LIGHTHEADEDNESS AND  HEAVINESS AND DULL PAIN ON RIGHT SIDE IS AND WHAT CAN BE DONE?