Hi my son is 6 years old and currently is stomach sick, fever,dizzy feels like hes tipping, or upside down and that his head is touching the ceiling. Complained of chest pain, went to doctors his heart rate is increased as well as his breathing yet has no signs of bacterial or viral infection. Possibley Appendix but unlikely is what I was told. Just looking for a second opinon, what should I be concerned or watching for?