I'm sorry to hear you're experiencing a high fever, body pain, blocked nose, and chest congestion. These symptoms often suggest an infection such as a viral respiratory illness or possibly a bacterial infection.

Here are some general steps you can take:

• Rest and Hydration: Ensure you get plenty of rest and drink fluids to stay hydrated.
• Fever and Pain Relief: Over-the-counter medications like acetaminophen or ibuprofen can help reduce fever and body pain. Use as directed on the package or by a doctor.
• Nasal Congestion: A nasal spray containing a decongestant like xylometazoline may provide temporary relief for a blocked nose. However, these sprays should not be used for more than a few days consecutively to avoid rebound congestion.
• Monitor Symptoms: If you experience worsening symptoms such as difficulty breathing, chest pain, persistent high fever, or if symptoms last more than a week, seek medical attention promptly.

Given your symptoms, it is important to consult a general physician or an ear, nose, and throat (ENT) specialist for a thorough evaluation and appropriate treatment. They can determine if you need further investigations or specific medications.

If your breathing becomes difficult or you experience severe chest pain, please seek emergency care immediately by calling the emergency number provided.To narrow down potential causes, we will need some more information.Please tell me your age and gender.