This sounds most consistent with an acute viral upper-respiratory infection, but high fever with weakness needs monitoring. I would want to know the exact temperature, duration, breathing status and any medical conditions.
Next Steps
Rest, drink plenty of fluids and check temperature regularly. Arrange a same-day examination if fever is high, persists beyond 2â3 days, or you develop breathing difficulty, chest pain, confusion, dehydration or worsening weakness. You can book a Practo consult with me for assessment.
Health Tips
Do not start antibiotics without an examination. Seek urgent care immediately for breathing difficulty, chest pain, confusion or inability to keep fluids down.