Over the past 6m'ths, iv'e had!! Please read and help..?

Over the past six months I have been experiencing very funny feelings, as if I am leaving my body, seriously it's a weird feeling a swooning feeling, it starts with a weird taste/tingling in my throat and a buzzing sensation in my body from head to toe, it's as if my senses are leaving my body, then it goes away. Have you ever heard someone say I think someone has walked over my grave, well it's like that but on a regular basis.. I have explained it to my Doctor but he can't put his finger on it.. Can anyone explain whats going on? or has anyone gone through the same thing..