I ve had a heart Cath, which was good. My glucose, cholesterol were good in January 2013. I m a female, 41 yrs old, 5 3,wt 210 and on Carvelidol for BP. I ve been feeling nervously and jittery for 5hrs. no heart palpitations. Could it be a thyroid disorder? I could go to the doctor, but currently have a lot of medical bills from the hospital, cardiologist and radiologist.