Hello. I have understood your symptoms and according to it and the history given by you, you might be suffering from recurrent pharyngitis, which is the infection of throat and associated with allergic component as well.
Next Steps
Antibiotics
Anti allergics
Antacid
Health Tips
Try to avoid cold and spicy food as much as you can. Even avoiding triggering factor, like sweets in your case, will also be of great help to you. Kindly contact if needed.