Hi doctor I need to know after 30 days of last exposure I did all std test these are negative one more thing my last exposure was protected I have used condom property but I have also did some additional hiv test like weston bolt and rna pcr test there were also negative but doctor told me you need to take pep so I took for 28 days I did next test due combo test from lal path lab this is also negative but want to know my if pcr and western bolt test were negative after 35 days of exposure so doc can still prescribe pep because he looted me but I want to know after 78 days of exposure my due combo result also negative I am risk free or I am still in risk I want hiv expert response here please guide me no one giving me right answer please help me.