Hi and thanks for the query,
You are down with upper respiratory tract
infection, do not worry.
The sores in your nose may be due to vestibulitis.
You can take pain killers after checking the dosage.
You will need an appropriate antibiotic and antibiotic cream for your nose, Please see a doctor for the same.
You can use normal saline nose drops...... 10 drops 3 times daily . It will help with the scabs.
Do warm salt water gargling 4 times daily for the sore throat
Drink lots of warm fluids and avoid cold