After reading your complaints the main two things that pop to my head are that you either suffer from nasal congestion
or strep throat
Both conditions are treatable, congestion by :
- Sleep on 2 pillows or elevate the head of the bed.
- Use long-lasting nasal decongestant nasal spray
just before retiring X up to 5 days.
- Reduce the heat or get a humidifier or both
and strep throat by antibiotics.
Still I would recommend that you see either a doctor or an ENT specialist
, who can concretely prove the diagnosis.
Hope this helped