I have been suffering with insomnia, severe fatigue, weakness, numbness, diarrhoea etc since baby's birth ten weeks ago. I have MS so the doctors just assume its all to do with that and ignore me because my bloods are ok. But I am certain i am low in something. What is logical to be low in at this stage? I suspect B12. Anyone else have this? The only thing that eases it is feeding less and giving formula, and i'm trying to avoid this but it's breaking me.