A little over a month ago, my 9 year old daughter started complaining of chest pains. Serious chest pains. She basically felt like she was having a heart attack, several times a day. We saw the doctor, who diagnosed her with something called costochondritis, which is an inflammation of the cartilage between the upper ribs and the sternum. It results in sharp pains that mimic a heart attack.
Usually this condition resolves on its own within a week or so. My daughter was on limited activity. She took Advil for the pain, promethezine to keep from coughing (that makes it hurt worse), and Tums to prevent stomach upset and keep the diaphram from pressing on it.
We've been back to the doctor at least four times. He has said it's healing but slower than usual. We thought she was doing better, then yesterday it got worse again while walking to church. Then again today while reading in school. I called the doctor again and he's sending her for a chest xray tomorrow. I don't expect it to show much since the ribs may be in the way, but at least we can rule anything else out.
Wish us luck.