Now, starting this past February I've started having these fainting
spells. I start to feel very off balance, weak
, sometimes the sharp head pains accompany this, & then I faint/pass out. Once I come around a little the heart palpitations start. I was diagnosed 6 0r 7 years ago with a Mitral Valve Prolapse (minor). Have never had any real problems with it. My doctor since has tested me for diabetes, hypoglycemia, again for thyroid problems.