I am 28 years old man , i massage girl did an oral sex for me around 10 weeks ago . the whole process took around 10 minutes and i didnt ejaculate . i did an ELISA 4th generation test after 3 weeks , results were negative . is the result conclusive and is oral sex considered unsafe sex and can it be a way to transfer HIV ????? , because after two weeks of the incident i had a flu ( blocked nose only ) for 1 day followed by a sore throat for 3 days , i took an anti biotic for that . furthermore after 5 weeks i have a flu for 3 days ( blocked nose as well ) . 8 weeks after incident i had my tonsilis swollen i took an antibiotic as well for this incident . i am really worried that i have HIV . please advice .