Based on your symptoms, you may have a viral infection such as a common cold or flu. Get adequate rest and stay well hydrated with warm fluids. You may take paracetamol to help with body pain and sore throat, and use a saline nasal spray or an antihistamine to manage your runny nose and red eyes. A simple cough syrup or steam inhalation may ease your cough. If your symptoms worsen, persist for more than a week, or you develop a high fever or difficulty breathing, please see a doctor promptly.