4th Generation ELISA

Please, could someone help me? I had in a risk situation in last November 20th making sex with a girl (vaginal). She told me that she makes blood tests to follow her FAN values for 7 years and the results was ok.
I did 4th Generation Elisa tests in the 6th and 8th week. The results are NEGATIVE in both.
Can I trust in these results: a 4th Generation test in 8 week after a risk situation?
Thanks a lot!

[cna341]

your tests at 6 and 8 weeks post exposures will be considered conclusive by most of experts but here we are following  FDA guidelines which say only a test after 3months is conclusive although all doctors on this site will consider ur test after 8 weeks conclusive(because of ur low risk exposure insertive vaginal's risk for HIV is 1 in 2000).
but we cannot say its conclusive until the FDA changes it's guidelines for testing.test after 3months and expect it to be negative!!!:)

[cna341]

your tests at 6 and 8 weeks post exposures will be considered conclusive by most of experts but here we are following  FDA guidelines which say only a test after 3months is conclusive although all doctors on this site will consider ur test after 8 weeks conclusive(because of ur low risk exposure insertive vaginal's risk for HIV is 1 in 2000).
but we cannot say its conclusive until the FDA changes it's guidelines for testing.test after 3months and expect it to be negative!!!:)

[AlexRob]

but, when you say to do a test after 3 months, it means 3 months after the risk situation, right? Thanks!

[cna341]

yes 3 months post exposure.

[AlexRob]

Thank you, so much!