My honest suggestions to you are:
1. Drink plenty of warm water
2. Use povidone iodine
throat spray or gargles for a week or ten days, to reduce the inflammation and bad breath.
3. If you have any problems related to the acid reflux
, it has to be treated with proton pump inhibitors.
4. Consult your dentist
for a complete evaluation.
5. Avoid chilled food and beverages/smoking/coffee/alcohol if any.