Hi doctor , I have done a sexual inter course with a unknown using condom before 6 years. I did not get any symptoms of window period. After 4 years, there are medical camps arranged by my company, they collected my blood samples, they have done tridot test, result is negative and again after 1 year, i have done tridot test again, it is also negative. But recently, from past 3 weeks, i have severe acne . I am very much feared of hiv . can i trust tridot test. is it gives accurate result. please help me. i have test for triodt test 2 times after sex exposure after 4 yers, it is negative. it means i am not infected r8........pls help me.............