Hi and thanks for the query,
For the blocked nose you can use decongestant nose drops like otrivin
Instill 3 drops in each nostril
3 times a day for 5 days. 10 minutes after instilling the drops do steam inhalation .
You can take pain killers for the sore throat
You probably require antibiotics and a cough
suppressant so please consult a doctor for a prescription.
Some general measures you can follow.
1) Drink plenty of fluids.
2) Avoid cold foods and air conditioning.
3) Do warm salt water gargling 4 times daily.
4) Absolute voice rest for 3 days. No whispering and yelling.