I had a bunch that were all bigger than 5mm. I went to the Dr because it was flat out painful. Dr. Just kept screwing around. Go take a test and wait for the results. Rinse wash repeat. After three weeks of this the pain stopped being intermittent. I went from Friday night to Sunday night in agony. I just wanted to sleep. Finally caved and went to ER. Finally found out it was kidney stones and ofcourse it was labor day weekend. They wanted to keep me in the hospital. Apparently when you don't eat or drink for a few weeks your insides begin to shut down. Went to the Dr. Tuesday and had surgery Thursday. I guess I eat to many cashews