momofyaqub,
I would suggest vitamin C, vitamin D, and B complex. You can also try a multivitamin containing all of these. It's a good idea to increase hydration and add exercise into your routine. A daily vigorous walk actually fights fatigue if you incorporate it into your daily routine.
Wheat grass and folic acid may also be helpful.
You may ask your doctor to check your thyroid, and actual iron stores to rule out any other causes of fatigue.
Hope you feel rested and more energetic soon,
Sharmin