I just got this weird bubbling feeling in my back on the left side it was almost like gas bubbles they way the feel is this gas? or more serious? i wanna say it was like between my lung and kidney

Nerve or muscle: This sounds like an irritable superficial nerve or muscle in the back. Gas entrapment would usually be felt within the abdominal area. If you're still concerned, see your physician for evaluation.

Prob nothing serious: Serious problems are likely to get worsen over time. If you don't have angry pain, which is persistent with difficulty urinating or fever, it may be something benign like excessive gas.