For your fever, paracetamol or ibuprofen are effective generic options to help lower your temperature and relieve body aches. For your blocked nose, a saline nasal spray is a safe way to clear congestion. You can also use a decongestant nasal spray containing oxymetazoline for quick relief, but limit its use to 3 to 5 days to avoid worsening congestion. Alternatively, an oral decongestant like pseudoephedrine can help. Please rest, drink plenty of fluids, and consult a doctor if your fever lasts more than three days or if your symptoms worsen. take care!