You should have your doc do blood work, checking out the usual things plus thyroid hormone levels and blood sugar. Doctors should always look for physical ailments as the cause of anxiety and not dismiss it out of hand without first checking the main culprits.
yes i know them feelings oh so well anxiety will make your body do crazy things i know i've had anxiety off and on for 13 years it is very tuff and depressing but u will get better u will have good days and bad days but it will work out.hope u get better