Please do not beat yourself up over this! My little girl had an appendicitis 2 years ago when she was 7. I picked her up from daycare and she said she went to the Nurse at school because she had a stomachache. I asked if she felt better now she said yes. When we got home I thought she looked a little pale, then she said she did not want to eat a snack. That's when my "mommy radar" went off because my girl loves to eat! I thought she felt a little warm and she had a temperature of 100.8. I thought maybe she had the stomach flu or something. Then when we went to take here sister somewhere, she vomited in the car and grabbed at her right side. My instincts told me something was going on and we went to the ER, but I still thought it was probably just a stomach virus. Well a few hours later after CT scan she was diagnosed with appendicitis and had surgery! We went home the next day. Since then at the school I work, I have had two students who have had an appendicitis. One boy came in twice, both times complaining of pain to his upper right side, no fever, no vomiting, eating normally. He seemed totally fine, I didn't even send him home, but I called his mom and just let her know what his complaints were and the symptoms of appendicitis were. He had surgery the next day! 2nd student came in complaining of stomachache to center of abdomen. He ate a couple crackers and was doing puzzles, seemed okay but would occasionally lean over and hold his abdomen. Again no fever, no nausea or vomiting. I ended up calling because he kept complaining about his stomach and his mom said she would just come get him. When he heard he was going home he jumped up and ran out of my office to get his stuff. I thought he was faking! Mom called the next day and said he had an emergency appendectomy that night! Both parents were very understanding and neither were mad, but I felt horrible. It happens!