I understand your concern.
As per your description,you may suffer from gastroenteritis.
And you need to maintain a good hydration with Gatorade.
You can take OTC Emetrol first
And take OTC Gas X and start citrucel and probiotic.
Take OTC Advil.
Peptobismol is helpful in both diarrhea and nausea.
Do massage with topical diclofenac sodium ointment on back of neck
If you are unable to keep liquids down with persistent vomiting,diarrhea,pain then you should see a doctor at ER.
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