I haven't eaten for over 12 hours and I woke-up with stomach pains, feeling a bit woozy, and tired. My dilemma is whether or not I should try to eat anything. I feel colder than usual but don't have any chills. I don't have a thermometer so I can't take my temperature. I'm half tempted to have some hot and sour soup and see if that stays down and makes me feel better. I can't tell if I have flu or simply hunger pains. Any good way to know?