Food poisoning is the pits and I feel for you. I also don't believe the antibiotics will help and taking them randomly is really only building your resistance to them, making them moot when you actually might need them. Your best course of action is to keep sipping on liquids, little sips often. Crackers when you can and some Imodium If you don't feel better in 24 hours and no improvement CALL YOUR DOCTOR and if you don't have a doctor, go to one of those Walk In Clinics. Its nothing to mess with at all