Vomiting/diarrhea? Or cold like symptoms?
If V&D still persistent after 24hrs go the ER to get hydrated per IV and get checked out.
Cold symptoms drink lots of fluids the key is hydration take Tylenol for fever or other discomforts you can even do Tylenol PM if you need rest. You can also take Benadryl for runny nose / sleep as well.
Try to bring your temp down. Cool shower, wet cloth on your head... take some tylenol, if your fever increases or doesn't go away, then go to the hospital.