Had Protected Sex Still Worried?

Had protected sex with sex worker exactly two month ago. It was vaginal and Condom didn't broke and everything finished ok. Sex worker was professional , didn't accept to suck or anal or even kiss. She put the condom. After two weeks I started to have sever dizziness and after a week it was gone. Had my blood tested after I saw the sickness. For HIV, Hepatitis and some other things it was negative. Then 10 Days later I noticed Fungal Infection down on my armpit on both sides. I went to doctor and it curred. Then I burned the roof of my mouth with hot tea two times and ulcer developed. Then for no reason ulcers ( red dots with white circles around them ) appeared on my tongue and developed very fast to four. I tested my blood 40 days after intercourse with ELISA and was negative. Then I had back of my knees a kind of suspicious pain. Last week been to doctor and I was complaining about neck pain and he said my Lymph's are swollen. 3 Days ago another ulcer appeared on my tongue again and it is vanishing at this time but left me with a terrible feeling that I am infected. During this two month little by little I am convinced that I am infected and sustained sever stress that was unprecedented whole my life. I want to go for another test but scared badly and know that I have to wait until 3 month or even 6 month. Can anybody suggest me if there is any conclusive test ( even expensive ) is available? Am I over reacting? Do you think I should even do the third test?