lori,
It really sounds like you need a good going over. Most of the symptoms you describe are pretty common place around here, and if you read through the message base, can lead to quite a bit of distress.
Your next step really should be to see an internist to get a complete history and physical to determine if any other diagnostic testing is indicated.
Pretty much every nonspecific complain has been attributed unfairly to MVP. As more stringent guidlines have been applied to echocardiography, it is not diagnosed as much as it used to be. An echocardiogram would be the way to rule this out. Even if you don't have it, it would not mean you aren't experiencing your symptoms.
See your doc as a start, let us know how things go.
good luck