Worrying about kidneys 1. brief sharp pain in lower bottom abdomen while sitting 2. light dull pain above right buttock no signs of urinary infection?

Not kidney problem: It's very unlikely to me this would be a kidney problem. You would have to have a history of kidney trouble or urinary symptoms to raise my suspicions. A kidney will 'let u know' if there's a problem -blood in the urine, fever, other urinary signs, significant pain etc. I would look for other causes of ur symptoms like gas. If pain continues, if fever develops, or if there's urinary signs-call doc

Probably not: These symptoms are not likely to be a sign of kidney disease. You can confirm this by getting a urinalysis at your doctor's office. If the symptoms persist or worsen, have your doctor evaluate.