I have been facing tightness and pressure in my head throughout the day since a week. Sometimes headache accompanies the pressure. I am feeling weakness and fatigue and lethargy since a week. My appetite has also decreased and my weight has decreased 4 kgs in 20 days. Occassionally,I feel shortness of breath and ears clogging. I went through routine blood tests. Report is fine except B12 (29.4 pg/ml). My HDL is border line low (36 mg/dl). What should be the action plan for the same? Kindly help!