I have been experiencing left sided flank pain for a week now. Went to my pcp, who had me go for an ultrasound and ct scan without contrast, to rule out a kidney stone. The test results came back with no significant findings. Also, have blood test, and a Urin analysis, which came back normal. I am still in pain. The pain is sometime sharp, but mostly dull pain and some nausea. No fever, vomiting, or change in bowel movements. What should i do next?