I find applying heat and cold to a aching back to be my first line of defense to ease the pain.
You'll see there are more than simply popping pills for pain relief, although that is helpful for many of us.
A gentle massage, or a deep massage, depending on what's happening to your back when the pain ramps up, can be helpful.
Pillow for the legs can be a great help to easing up back pain.
Pain trackers can be helpful in finding common denominators in your pain.
These videos will help you do stretches that can be helpfu but be cautious with stretching if you're in an acute and painful flare of your back pain.