Why do i am having dizziness , nausea nd fatigue?

Vitamin D Deficiency: More and more we are becoming aware of multiple symptoms of vitamin d deficiency. You need to have a full workup to make sure you don't have anemia and check your sedimentation rate for inflammatory condition known as polymyalgia rheumatica and vitamin d levels. Must see your primary care doctor.

Vague: Your symptoms are common, but quite vague. Evaluation or useful comment in this forum is quite difficult.