I'm feeling fatigue, leg pain (mostly below knee), sometimes I feel lightheaded and dizzy. I have IBS D but from some days I'm feeling very sleepy all day long. I have done my vitamin tests. My Vitamin D is 28.55 ng/mL. Vitamin b12 is 447 pg/mL. Vitamin A is 426.42 ng/mL. Vitamin E is 7834 nd/mL. Vitamin K is 0.38 ng/mL. My TSH is 3.62. Hemoglobin is 11.1 g/dL. I feel dizzy when I get up from my chair or when I do little yoga or activity. I have muscle fatigue as well i.e. when I climb stairs I have extreme leg fatigue.. when I hold something for too long in my hand then I have hand fatigue. I find it difficult to do my tasks due to this. I take 8 hours of sleep daily still have this. I don't feel energized. I see floaters and at night I see  afterimages when i blink or close eye after looking at the flash lights or bright light in the morning. Please suggest me treatment.