Weakness, anxiety and Numbenss. To do?

I am suffering from severe weakness, anxiety,more heart beat and numbeness all over body throughout the day when i am doing any physical activity like jogging/exercises on that day. It is taking 3-4 days to become normal with complete rest and no physical activities. Agian if i do any exercise the symptoms are repeating again. I have been experiencing this problem from past 5 months. General tests like CBP, CRP, Thyroid, Urine analysis, FBS, PPBS, Electrolytes are within limits only. FBS is around 80-90 ans PPBS is around 85-100. Consulted general physician and Endocrinologist, they prescribed  multivitamins and diet. But the problem still occuring. What is the root cause for this problem? How to get rid of this problem completely. Whom to consult or what else i need to do?