IS THIS SERIOUS...or am I just overreacting?!?!?!?!?

Im not feeling very well. Not sure if i have food poisoning or not but here are some symptoms (before I go to the doctor) if its not too serious. My bottom teeth are super sensitive, my mouth tastes like metal or silver er w/e, my tummy hurts as if im gonna vomit but i dont i keep eating cuz it makes it feel better but i never get full, my head has been killing me, im not congested or anything but sometimes i space out and forget what im doing. Does this sound like food poisoning? or something worsse I should go to the doctor for?