Fever and headache. Stomach pain too!

There isn't sufficient information to reach a specific diagnosis. I would advise you to visit the ER and get evaluated and undergo further investigations such as CBC, etc. to find the underlying cause of the problem. You may require antibiotics, anatacids and antipyretics. These steps may help: - Avoid cold food and water, preferably have hot food and water - Don't skip meals have a liquid diet containing soups and progressively increase to solid diet as per how you can tolerate. - Have food rich in vitamin C such as oranges to help build immunity. - Drink plenty of fluids, drink 3 liters of water per day - Do salt water gargling with lukewarm water thrice a day - Do steam inhalation (plain steam) thrice a day and apply vaporub over your chest and nose - Maintain good personal hygiene(Wash you hands regularly) - Rest plenty, body heals while at rest If the condition persists or worsens visit nearest ER at earliest