please i need to know and be sure of my health, since last year 21- 23 i was exposed to to a sexual contact after my condom busted, since then i have been living with fear, so during october i had a serious headache which is still disturbing me now but lightly, so i want to know, if it is hiv, although i have not tested for my status, i had sex with another lady in August 12, later on October she went to test and was negative, i want know the maximum month that hiv can show up in a test. thank you