Should I still be worried after negative hsv-1 and hsv-2 blood test after 7 weeks?

FACTS
Aug 12th - I had oral sex w/girl who may/may not have had herpes at that time.
           Both performed oral for short period of time and we had gential
           rubbing of some sort but not full intercourse.
Aug 17th - (around this date) - Girl said she was infected by cheating husband.
Aug 23rd - (around this date) - Girl went to clinic with first ever outbreak of w/herpes.
Aug 25th - (around this date) - Husband took test (I don't know what kind) and came up negative.
Oct 4th - Girl called about something else and mentioned getting herpes to me.
Oct 5th - (7 weeks 5 days after contact with girl).
 - I went to std clinic for herpes blood test .
 - Actually tested for everything else too
Oct 13th - My blood test was negative for both hsv-1 and hsv-2 and all other tests were negative.
         - Was told to return after 12 weeks after initial contact w/girl for most accurate results.
         - Was told I am low risk.

QUESTIONS
1) Can I be confident in any way with the results of the test I took after 7 weeks 5 days?
2) If I come up negative after 90 days can I assume I am not infected?
3) If not, what can I do to be confident I am not infected?

Any answers and additional infor would be great.