Thanks for your question on Healthcare Magic.
I can understand your concern.
By your history and description, possibility of viral upper
respiratory tract infection (URTI) and
bronchitis is more.
Your swollen throat is due to viral URTI.
Bronchitis is common after viral URTI. And bronchitis can cause breathlessness.
So follow these steps for better symptomatic relief.
1. Drink plenty of fluids orally and keep your self hydrated.
2. Do steam inhalation and warm water gargles 5-6 times a day.
3. Take antihistamine and anti inflammatory drugs.
4. Avoid oily and spicy food.
Don't worry, you will be alright with all these in 1-2 weeks.
Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.