You need all 3 doses. You probably have a high degree of immunity now, but without the third dose, it will fade over the next year or two. The third dose confers lifelong protection.
You don't need HIV testing on account of this exposure. Your next routine test is fine.
Thanks so much for your response. I assume also that I should not even be worried about HIV and I can wait for next year for my usual HIV test. I have another quick question. I got two of the three vaccines for the hepatitis and I need to take the last one next august. Am I safe against that or to be wholly immune I have to complete the vaccination?
Thanks again
STDs generally don't cause cold symptoms -- sometimes sore throat, but not runny nose or cough. You can be sure you just caught a cold. If you're close enough to someone to have sex, you're certainly plenty close to catch a cold. So maybe you got ir from the sex worker, since the timing is about right. But probably not from performing oral sex on her.
As far as STDs are concerned, they are rarely transmitted by cunnilingus, in either direction. The most common exception probably is transmission of oral herpes, due to HSV-1, from the oral partner to the genital partner. In my 30+ years in the STD business, I don't recall ever seeing a case of oral/throat STD acquired by cunnilingus. There are theoretical risks for gonorrhea and for oral infection with HSV-2, but too low to worry about.
Why do some websites disagree with this? Mostly it's probably because of a protective attitude, especially for government-run information services: better safe than sorry, i.e. better to say there is risk when there isn't, rather than take the opposite risk. Some make assumptions without clear knowledge. (Health educators, who often design such websites, aren't usually trained experts. The same health educator might be responsible for messages about HIV, STDs, smoking, asthma, injury prevention, and routine immunizations, without being a knowledge expert in any of those areas.) Sometimes there are political or social biases -- someone whose religious style is against oral sex might inflate the risks. Finally, for some things, even we experts don't have solid data -- just our experience. There are few research studies on STD transmission by oral sex, so nobody can be dogmatic.
Bottom line: If you're nervous, visit a health care provider or STD clinic. But I really don't think it's necessary.
I hope this helps. Best wishes. (Your English is fine, by the way.) HHH, MD