Could I have a b12 deficiency as I’m keep getting numbness nd pins and needles in my arms and feet. It feels like my eyes are so heavy all the time too like I feel so fatigued. And I keep getting blurriness in my eyes all the time now. Normally in the past when I get showered in the morning I feel refreshed but now I shower and come out still feeling like I’ve got a heavy weight on my eyes. Had eyes tested at opticians and nothing’s changed with my sight so. Does anyone else recognise these symptoms as having b12 deficiency?