Im sorry to hear about your symptoms. Now from what you are describing it sounds like that you may havedeveloped an infection of the deep structures in the throat. most likely the tonsils or the adenoids. These would in most cases also cause pain however in the presence of chronic infections, pain may not be present always. This can also cause other symptoms like a feeling of heaviness in the throat, coughing etc.
Apart from bacterial infections, it is also possible that you may have developed an abscess itself in the throat. Usually an abscess is extremely painful and would also cause a fever as well. if this is the case the the region would have to be drained as soon as possible.
A fungal infection can cause this thick white discharge from the area and the most likely culprit can be candida. if this is the case then orl medications like fluconazole would be the order of the day.
Lastly this can also be due to an autoimmune pathology but i think an infection is the most likely scenario here, you need an ENT physician to do a thorough evaluation as well as possibly do a scope of the throat.
Do you have any more questions?
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