If a 7-year-old child has had a fever for 24 hours, along with nausea and stomach pain around the navel, it is recommended to give them Tylenol for the fever and stomach pain. Additionally, small amounts of liquids should be consumed at a time, and small, frequent meals should be eaten throughout the day to help with the nausea. Avoiding salty, fatty, or spicy foods can also be beneficial. If the nausea persists despite these measures or interferes with eating, it may be helpful to consult a pharmacist for anti-nausea medication. With the presence of a fever, especially during a pandemic, it is advisable to get a Covid-19 test for the child. If the fever continues for more than 3 days despite taking Tylenol, or if the child's condition worsens (increased pain, persistent nausea, new symptoms), it is important to seek medical attention from a doctor.