The following sites may help you better understand what your child is experiencing, how to seek support for them (and yourself!), and their healthcare needs.

Gastroesophageal Reflux Disease (Kids Health)

Every adult, at one time or another, has experienced heartburn and that gnawing mid-chest discomfort after a big meal. Maybe you had one too many hot dogs at the ballpark, or maybe your cousin's chili was a bit too hot for you. This provides some information about GERD in children.
http://www.kidshealth.org/parent/medical/
digestive/gerd_reflux.html

Gastroesophageal Reflux in Children and Adolescents (National Digestive Disease Information Clearinghouse)

GER often begins in infancy, but only a small number of infants continue to have GER as older children. Evaluation by a physician is advised for anyone with persistent symptoms of GER.
http://digestive.niddk.nih.gov/ddiseases/pubs/gerinchildren/index.htm

Reading Room (Pediatric Adolescent Gastroesophageal Reflux Association)

A friendly place to learn almost everything you need to know about reflux. Articles including acid reflux 101, going to school, diagnosing, triggers, selecting foods, treatments, maintaining family balance and causes.
http://www.reflux.org/reflux/webdoc01.nsf/
(vwWebPage)/ReadingRoom.htm?OpenDocument