Sheila - re: the pulse thing - please make sure to get your thyroid checked. A simple panel of blood tests can tell if your thyroid is overactive. Rapid heartrate and fatigue or weakness are some of the symptoms.(Take it from me - I'm a family physician and have been both hyperthyroid and hypothyroid).
The blue hands and feet can be symptoms of Raynaud's syndrome. This is often associated with thyroid disease.
Also - DO cut the caffeine out - it will only make whatever it is worse. And take a good multivitamin.
