I had done Unprotected vaginal sex with a girl who has a std but unknown about her Hiv status,How fool I am!!.....Then I tested...25 days..NEGATIVE,40 days NEGATIVE,60 days NEgATIVE....all of this test are the very simplest one....Today I got my 75 days NEGATIVE(By ECA) result...Do you people think I am safe?or still I need to test more?