Hi I am looking some advice. My son who is 9 has been having bad stomach pains for a while now took him to doctors who done a urine test showed blood but no infection he thought he could be constipated but turns out he isn't. We are waiting for an appointment at the hospital but the last week have noticed he isnt himself at all and not as energetic. A girl i know said this is all the symptoms her daughter had before being diagnosed with cancer. Should I be worried x