What Causes Fever And Throat Pain After Oral Sex?
You are having an infection
Fever and pain are signs of an infection and you are likely to be having one.
The picture sent by you shows redness at the back of your throat, which again can be due to an infection.
Many times the bacteria causing the infection especially after oral sex may not be detected on the routine tests which you have done.
The best thing would be to meet a doctor, who will take a throat swab for microbial culture and guide on further need for any antibiotics.
In the meantime I would like you to start gargling with chlorhexidine gargles thrice a day and take paracetamol 500mg 2 to 3 times a day for the fever.
It is not normal and is a sign of infection
It is a antiseptic gargle and will reduce the infection.
Please ask for a throat swab, this different from the other tests you have done and can exactly tell which bacteria are growing.
Pus pockets are not normal and are a sign of infection, therefore I asked you for the test and to meet your doctor.
You will need a course of antibiotics, don't you will be fine.