1.Please check your temperature. And oxygen levels.
2.Since when is it happening?
3. Have you been in contact with covid positive patient in last 14 days?
4. Any changes in appetite?
5. It could be either a routine URTI, or a covid or a malaria.
In all cases you are adviced to consult a doctor and atleast do steam inhalation and gargles with salt water for 2-3 times per day.
Next Steps
consult a Doctor as you might need a couple investigation to be done.