I wake up everyday with headaches and severe exhaustion and dizziness, b12 defiency but levels are up please help?

See a good doctor: There are many possible causes of your symptoms: many type of infections (bacterial, viral, fungal, parasitic), anemia, nutrient deficiencies, toxic exposures, thyroid & other hormonal problems, sleep disorders, heart disease, stress, depression etc. It is impossible for anyone here to diagnose you further. See a good doctor, preferably one with a holistic perspective, for a thorough evaluation.