Hi Dr. I am male. I am unprotected vaginal sex single exposure with a girl. 9 months later found she is hiv positive. My question:- 1) Everywhere is saying after a certain window period time (3 months) after getting negative is conclusive & even after (6 months) confirmation is definitely negative. But why are all these other people saying you can go years without showing positive & that's really freaking me out big time. Is it true that it takes your to come up positive or does it only take 6 months to know 100%. What's true? 2) One doctor say in medical no test 100%. 3) 17 months post exposure hiv rna pcr qualitative negative. 22 months post exposure total std panel combo test negative. 4) I am 100% negative. 5) My result is change in future? 6) What is 100% window period. Hiv many years be come positive what is the truth. Truth. Please suggest me.