B12

Hi All
I was wondering how many people suffer from twitches and electrical impulses running up and down their legs all day and pulsing in the thighs
I was just diagnosed with border line b12 deficiency ,my levels are 156 normal borderline is 150, my vitamin d is low at 47 normal over 50,my ferritin was 19 the lowest normal level is 30, my hemogloblin is normal
My legs feel empty and hurting ,my body feels like it has been in the war zone
I have started eating liver, sardines and all other b12 products, how long before this twitching stops,also I have trouble sleeping,now I am scared I have motor neurone even though the doctor said it is b12
also weird nerve like quick pains throughout the body and trembling digits
any help would be appreciated
Star