I understand your concern.
Well as you describe,possibly it's bronchitis/pleurisy so you should see your doctor again and chest x-ray,a blood test might show an increase in eosinophil counts, Spirometry to evaluate the lung capacity should be done to rule out underlying possible cause.
In the meantime you should try some self care measures like
Menthol steam inhalation.
Drink warm liquids.
Also do betadine oral gargles.
You should take OTC Motrin and try Robitussin DM.
Also use a humidifier in your room.
You can elevate your head while sleeping.
If symptoms are very severe then visit Emergency room.
Let me know if you have any further query so we can discuss it thoroughly in every aspect.
It’s my pleasure to continue this conversation until you satisfy.
May I help you further?
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Waiting for your response.