My neice has been experiencing problems over the past few years that we can not find the answer to.. she every so often experiences a pulling sensation near her belly button, she gets dizzy, nauseaus and her blood pressure gets really low. She has been to gastro specialists and they can not seem to figure out what is giong on. It just completley wipes her out and she has been missing lots of school. We are at a loss on what to do.. she is a great kid and we want her healthy!...