What Causes Persistent Fever, Stomach Pains With Wrist And Hand Pain?

Hi, may I answer your health queries right now ? Please type your query here...our 5 yr old was hospitalized 2 wks ago for 3 days with Pneumonia. He came home completing the antibiotics. 3 days later had high fever and was dx with double ear infection. After another regiment of antibiotic and 5 days he now has another high fever 102.5 and stomach pains. I can hear the belly sounds and it is very warm to the touch. He also complains that his hands and wrist hurt a lot. They too are very warm, but his forearms are not. He has an appt tomorrow at 1pm but if I were to get some advice it would help me not be so worried there is a bigger problem going on with him. Could this just be the same virus going through his body and why would all the antibiotic have gotten rid of it yet? (3 in hospital, one at home and one again the following week) Should we ask for any particular test to be sure what s going on? Thank you, Annie