Hello and Welcome to ‘Ask A Doctor’ service. I have reviewed your query and here is my advice. In a diagnosed case of congestive cardiac failure, the work schedule you are following is hectic. A periodic relaxation with strict adherence to doctor s advise about diet, rest, exercises, and medicines is essential. Cardiac failure causes deficient blood supply to all organs causing all of your symptoms. To control your symptoms of head ache and pain/fatigue with swelling of legs, the regime suggested above is essential. Consult your cardiologist at the earliest. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Vasudha Jayant Athavale