Vitamin D / B12 and heart palpitations

Hi I just wondered if anyone knew if the following symptoms would be down to vitamin d/b12 deficiency:

heart palpitations
fatique
brain fog
brittle hair
achy muscles and bones sometimes
headaches
low sleep quality - light sleep

i have had a 24hr holter monitor and awaiting results regarding that and also having a blood test tomorrow however my vitamin d a year ago was 47nmol and b12 was 325 . i was told to take vitamin d supplements all year round however ive been a bit rubbish remembering them and nothing was mentioned of my b12

any experience/ thoughts would be great thanks