My 9 year old son has been complaining about his stomach hurting. I have taken him to the dr. She said he needed to poop more, he has been , but today he was complaining again and the school called said he was running a 100.1 temperature. And his stomach is hurting again. When we got home he wasn't running a fever at all. Any suggestions? He has been drinking apple juice. My mother-in-law is concerned it could be his appendix?