I Have Had Multiple Back Injuries Over The Past Few

I have had multiple back injuries over the past few years unfortunately. I have not had any pain for months until now. It first started last weekend. I drank a lot and stayed in a hotel with a very soft bed. I usually sleep on a firm mattress. The next day, I woke up with lower back pain. It subsided within a few days.

I went out again this weekend. And repeated the process. Same hotel with the same bed. I think I drank more than last time though. My lower back hurts way more than last weekend.

I just don't know if it's from the bed or kidney damage from alcohol poisoning.