My daughter has been ill for nearly two weeks she first started to notice her heart racing and she felt quite weak after it. She is eating and drinking fine but has no energy and is always tired I had a thyroid test done which was fine. She now is getting sharp pains into her chest and under her ribs an X-ray done was clear. She is still very pale and weak and keeps breaking down into tears saying she feels so uneasy she is only 9 and has never had any illness b4 this. Now we have been told she has a heart mummer due to all theses ongoing symtons yet we still have no answer as to what s wrong with her?