Need some help…

Hi! Im almost 20 years old, and Im a heavy drinker, all the free time I have Im mostly taken something, mostly some beers, recently i have gotten back pain after drinking alcohol, like taking 3 beers, then eating something, and then drinking one beer more and the pain on my back starts it won’t go away after a heavy sleep, now I started taking ibuprofen to feel better, even if I know that its not good for the liver and kidneys. Is there anyone with the same kind of problem?? Or do I really have to start reducing the amount of alcohol Im drinking. The few beers I was talking about happens only when Im on the go, at home its up to 20 beers a day. 😕