I am suffering anxiety i feel extremely fatigue, pounding heart and shaking legs, even when i am not very anxious also i face these problems?

A little goes far: You likely are underestimating the severity of your illness. Anxiety takes a toll on the body both emotionally and somatically. In addition to neuronal overstimulation followed by transmitter depletion, are sleep disorders, nutritional problems, physical deconditioning. Have a general medical evaluation. If nothing shows up, consult your psychiatrist for additional treatment.

Anxiety: Recommend seeing your primary care doctor for workup to rule out physical causes of anxiety, and referral to a psychiatrist for treatment.