It all happened after i gave oral sex. The white spots showed up first. Then i got headaches 5 days later. They were very bad at first.... for a whole week i couldn't do anything.... after that week they would come and go. During this time my lymph nodes in my neck became swollen, it would hurt to turn my neck. The back of my neck also hurt a lot. It has been 3 months since, the headaches and the white spots are gone, but i have a sensation at the back of my throat like something is stuck that wont go away. I got HIV test and it was negative. what could it be?