I had unprotected oral sex(Inserted penis into CSW mouth) ,for about 5 minutes, no other sex, till now 4.5 months completed, i didnt have any symtoms like discharge from penis , no sores nothing, and for my satisfaction i did HIV test after 80 days it came negative,its third generation test can it be conclusive at 80 days(11.5 week)? any other test to be done at this point? any std without the symptoms possible..? i am worried because i want to go home next week and planning to have unprotected sex with wife.