Have pain every time i urinate, test negative for infections. i have uti symptoms, flank pain, history of kidney stones but no blood in urine, help?!

May still be a UTI: Usually, pain on urination (dysuria) is a symptom of a UTI from which the offending bacteria can be grown from the urine. Less commonly dysuria can occur from the irritation of passing a kidney stone alone (i.e. Not a uti). In other situations, the laboratory can't isolate the microbe because it's too difficult to grow in culture (e.g. Chlamydia)- in that case, you may still actually have a uti.