Light sensitivity in eyes. The morning.

During night time I get afterimages in eyes after looking at flashlights or any bright lights. I also have weakness in legs while walking. I have weakness in hand if I hold something for long. When I look at bright lights, I feel them sensitive to my eyes and see the negative afterimages in my vision. I'm feeling fatigue, leg pain (mostly below knee), sometimes I feel lightheaded and dizzy. 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 p12 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 take 8 hours of sleep daily still have this. I see floaters in my vision and at night I see afterimages when i blink or close eye after looking at the flash lights or bright light in the morning.