I have felt like the above for a couple of weeks now, why do you think is wrong? My blood pressure is high end of normal and my weight is high end of normal. I have steadily been losing weight since Christmas (3.5 stone lost, down to 12st 4lb from 14st 9lb) through portion control. I have had a new cleaning job the last two months and weight loss has speeded up as I struggle to eat enough calories due to schedule, but I do eat more on days off. I don't feel weak with hunger, I eat a good varied diet but am thinking maybe I have high blood pressure and I don't understand why. Could it be chronic dehydration?