Ive never had this happen to me but not too long ago I was sitting here and had a headache and then got hungry and right as soon as i got hungry i got hot flashes, started shaking, and felt week. It kind of scared me. I went ahead and ate something and feel better now. My stomach is still a little queasy and the shakes are subsiding but again ive never had it happen before. Anyone else have this happen before? Im also wondering if maybe its also because I forgot my vitamin last night but ive forgotten it before and havent had this happen.