Hi my son is almost 6 yrs old and has been suffering from fever on and off for the last 2 and half months. We took all tests including urine test, blood test, chest x ray, ultrasound on the abdomen. All tests were normal but the blood test alone showed that crp count was raising every time the test was taken. He has been on antibiotics (amoxicillin, pencilin, augmentin, pencilin iv) for the last 2 months and still falling sick almost every alternate week. While the doctors say there is some infection that is causing the crp count to increase they are not able to say what is causing it. Should I be worried? should I take him for a full medical checkup for thorough examination? please note that for the last 2 months they were diagnosing as tonsillitis, viral infection, bladder infection, possible pneumonia but nothing came out positive in the tests. He does complain of eye irritation and pain in testicles sometimes. Please provide your insights.