Hi, Fatigued, No Energy, Feel Bloats But Changed Diet. Nail

Hi, fatigued, no energy, feel bloats but changed diet. Nail fungus on both big toes. Calves swell into ankles. Not a lot but it's noticeable. I work lots and on feet 70% of day. Any suggestions. Doctor said just to put my feet up. I don't want to keep telling him. What should I do ? Suggestions would be helpful as to what type of blood tests I can ask for.