extremely sharp pain in kidneys ( not kidney stones)?

Ever since I was around 15 years old I would randomly get this pain in both of my kidneys at the same time, the same level of pain in both. The pain feels like someone grabbed to small hot knives and jabbed then right into my back twisting and turning them. It was so bad I would fall on the ground and get in the feetle position until this random episode went away. Sometime this intense pain comes in intervals then comes back for round 2, then 3,4,5 one time this lasted a solid 20 minutes. I would also holds my breath to dull the pain. AND for some reason. I couldn't help but salivate. I noticed on time this happened after eating 1/4 glass of a1 sauce, I know that's weird but I love a1. And then another time happened when I was drinking a moderate amount of vodka and mountain dew. The times before that I couldn't recall what I was doing before it happened. Thankfully this hasn't happened in about 2 years, but ever once in a while I'll feel it start to begin again and the pain would soon dissipate. I'm not sure what to think of this