i have the same symptoms except they started when I was 12 I'm currently 13 but it seems to happen when I get up fast from laying down for no more than one or two minutes or for 5-10 min when I haven't eaten anything and do somthing active I'm not to sure what it is so if anyone can reccommend the right kind of doctor I need to see or something like that I would greatly appreciate the help

also .... It's very worrying over the fact that the majority of us are girls and teenagers ....