Sorry for the late reply and inconvenience.
Thanks for all this additional information.
I understand your concern.
I reviewed your pictures.
Well as you describe, it sounds like pharyngitis.
And it's nothing seem serious.
Do oral betadine rinse and saline gargles.
You should hydrate yourself with plenty of fluids.
Eat a bland diet and avoid hot, spicy, fried, greasy food.
Take OTC Prilosec and Motrin, Claritin for a few days.
You should start a multivitamin supplement and vitamin C lozenges.
If your symptoms will persist then see your doctor for further evaluation and management.
Let me know if you have any further queries so we can discuss it thoroughly in every aspect.
It’s my pleasure to continue this conversation until you satisfy.
Waiting for your response.