i had a f;u shot on friday...saturday, at some point, while cooking (steam and high heat-wearing fleece vest) i felt feint. sat down, was given chocolate and water. felt much better. tuesday morniing i had a bout of diahrrea and felt nauseus...slept a bit and went to work (had green tea,banana, half bagel)...felt hot and chilled and then a bit feint. had waater, salted chips, and a lollipop-felt better. came home, had electrolyte water, some saltines and slept for 4 hours- feel much better. ---a reaction to shot ?--low bp ?- dehydrated ?