Sorry about your current health concern.
You may take tablet Cetrizine 10mg at night after food for next 3 nights. Along with this, I would suggest mouth gargling with Betadine oral rinse solution thrice daily for 3 days.
If you also have fever
, you can take tablet dolo 650mg thrice daily after food.
Eat only bland food and consume hot water to drink. Home remedies
like ginger tea, green tea, ginger milk with turmeric helps in faster recovery.
Get well soon.