I have been suffering from headache since 2 years . I faint very frequent that too early morning when i wake up and whenver i change my position like while sittin to standing and viceversa. My haemoglobin level is 7.5mg/dl. From past monthz i m sufferin from a vry bad headache ,fatigue,dizziness . I loose my consciousness fuh 10 to 15 secz whenver i faint . From past 1 week i am sweating vry badly . I ve lost my apetite . And also loosing my weight without any intentions. From 2 years i ve omited blood twice . I ve shortness of breath ..