defintely drink some water too. Booze will dehydrate / tighten up your body.
I have back issues and I drink too much. But I also drink a ton of water.
Eventually you'll see a doctor or whatever. Physical therapy worked wonders for me. After my first appointment I literally never felt better.
Ab work, and tons of stretching. Never would have thought tight hamstrings (dehydration) would affect my back.
good luck. If you have to pick up things, make sure they are close to you. That is to say the opposite.... bending over and reaching out for an object = no good. get things close to you, then it while close to your body lift up