I constantly feel drained,tired all the time my legs hurt and I feel like I'm dragging them my speech I feel it's different but partner says I sound the same, my memory is terrible I get pins and needles in my arms and legs,Ive always got a head ache/migraine and blurry vision, I feel like I'm shaking on the inside and not the out and often feel like my heart is racing & light headed...my doctor don't seem concerned and thinks I've got anxiety,had bloods early 2020 which showed low vitamin D (24) and b12 level of (323) I'm 25years old and feel like I'm on death's door!!