It looks to me like on the basis of that B12, you have an explanation for all your symptoms. I'd want to see proof that they are really good now, on the high end of normal, if not OVER the normal, before pronouncing you okay.

These are not okay.

If the MCV is over the limit of normal, that means the low B12 was affecting your red blood cells, and your body was sending out a lot of new, younger cells, which are bigger than the average cell. I don't know the range of normal MCV offhand, but if it's flagged, I'd guess it's high.

Please read Rose's stickies on B12 and how to make sure you get the right amount into your system.