Hi Marlene thanks for the reply...like I said in my orginal post they have said my B12 levels are normal..only vitamin D levels wer down I'm taking prescription vitD tabs I'm also not diabetic checked and all good...also I'm taking a complex B supplements omega3 fish oils,pregablin.No I'm not a vegetarian..i never catch colds or flu,this was so sudden and out of the blue...my nervous system went completely out of whack...will this ever get better??