Thanks for your question on HCM.
I can understand your situation and problem.
By your history and description, in my opinion you are having severe upper
respiratory tract infection (URTI).
The most common cause for this is viral infection.
Viral infection can lead to secondary bacterial infection. And this further worsens the symptoms.
So better to consult ENT doctor and get done prescription for antibiotic drugs.
Along with antibiotics, you should follow these too.
1. Avoid oily and spicy food.
2. Avoid hard to chew food.
3. Drink plenty of fluids orally and keep yourself hydrated.
4. Do gargles with warm water and antiseptic solution like
chlorhexidine.
5. Also start antihistamines and anti inflammatory drugs.
Don't worry, you will be alright.