Before one month, I have tested Vit. D. Vit. B12. My vit D. Level was 54ng/ml and vit. B12 is 465 pg/ml. I have normal LFT, KFT and thyroid test. Dr. Said all is normal and stated that I have anxiety and depression. I have poor sleep, headache, back pain and sometimes burning sensation in lower back. Let me know that does I have Vit. D deficiency