Could My Symptoms Like Headache, Fatigue, And Strange Sensations Be Caused By My B12 Deficiency?

Hi I am suffering from some hlth issue headache pin sensation in hand arm feet feel low fatigue bitterness in tongue feeling not good I feel like I m not that person who I actual I remember everything but my internal feeling is different it s approximately feel this situation last winter and I have b12 deficiency pls hlp me to get out of this situation my b12 level is 180