Re: Seriously need a answer asap.
Well, at this point, there isn't too much you can do to prevent yourself from getting it, BUT:
1) You might already have had this particular bug.
2) Your body might have killed off the virus without it affecting you, happens all the time.
Most of the time, people who catch this sort of virus show symptoms within 24 hours, so if you're still ok tonight, you should be safe.
For now, eat small meals of easily digestible foods. If you start feeling nauseous, sip water or lemonade.