You could have grown a clitorus in the back of your throat from giving oral sex unprotected. Better have it checked out!
Studies have shown that people who perform oral sex on men often have sore throats, but no specific cause has been found. Stress undoubtely is often the explanation. Occasional cases are due to gonorrhea, but no abnormality can be found in most persons. Most cases of gonorrhea of the throat are entirely asymptomatic; and it almost always goes away within 2-3 months without treatment. Chlamydia rarely infects the throat. Herpes and syphilis can, but wouldn't cause prolonged discomfort of the sort you describe. Everybody has white spots on the tonsils from time to time.
Bottom line: If concerned, you could see a provider for a gonorrhea culture of the throat, but it probably will be negative. I doubt anything serious is going on.
Good luck-- HHH, MD