PEP for 13 days is not useful, you should not have stopped.
I need to understand from you in telecon, before I can advise anything. Risk is not for HIV
only but it is for other STDs as well.
Please take a private consult with audio video chat and then I can help u. Do not waste time and money in unnecessary testing.
Actual highest window period is 90 days for cheaper tests, better to wait.