Dear Dr. I had an intercourse with an escort 5 month ago. I have made Hiv 1/2 + p24 antigen test(Combo) after 160 days.Result was negative. - I think this is 4. generation test. -After 160 days Am I free from Hiv or need further test for conclusive ( Because Some doctors say 6 month isconclusive. İs it true ) - Have you ever heard of someone testing negative at the 3 month but turn positive at the 6 month if they were tested using a 4th generation test at the 3 month mark Do you assure that my test result will continue to remain negative....Tehere are only 20 days ( 180 days - 160 days )..Does the result change in 20 days.