HI doctor I have got my Tri DOt test done 4 times at 4th week,8th week and 13th week and it came negative.should I worry now or I am ok.I don't have any symptoms as such.I am just paranoid of this as I had sex with one other girl from my office and got checked exactly after 93rd day I last had unprotected sex with her.However I had unprotected sex with her 4months back for the first time.please help am I hiv negative.