Can i forget about hiv based on my 4th gen hiv test (hiv1/2 and antigen) negative at 86 days after unfortunate incident? learnt my lesson, thanks

I don't think so: The 4th generation HIV tests dentify acute infection through their ability to detect HIV-1 p24 antigens. However, I do not believe improved detection of early infection necessarily eliminates the chances that it may take someone longer than 3 months to test positive. 97% of infected individuals will test positive at 3 months, but to make sure you are not in the 3%, a test a 6 months is advised