I had non-protected vaginal sex (once) with a 44 old female on a business trip.  She was not a CSW, but I don't otherwise know her sexual history.  I just received blood and urine test results taken at day 28, all of which came back negative.  I haven't had any symptoms.  I understand from this forum that HIV and syphilis should be tested after 6 weeks.  1) In these circumstances, would you recommend that I re-test again after 6 weeks?  2) If so, would that be considered conclusive at that time?  It sounds like waiting 12 weeks is unnecessary and too conservative.

Thank you for the great work you do.