Hello and welcome to e health forum.
From the extensive history provided, it seems that you have recovered from a severe bout of âpharyngitis and could be having persisting issues due to post infectious bronchitis.â
Usually once a infection subsides the residual inflammation of the airway causes persistent âcough, this is called post infectious bronchitis. The main symptoms here are dry, cough in âparoxysms which persist for a long variable time frame.
Up to 25% of people suffer from a post-infectious cough â that continues for 2-3 weeks.
The condition resolves with time and conservative measures including steam inhalation, saline gargling, proper fluid intake and adequate rest.