Help me experts please

I had a sex with a spa girl few days(12 days) ago with condom but we had also oral sex which was very stupid things i've ever done & for that i never forgive myself..now i am very much scared about this that could i affected with HIV? I've anxiety that's why i am more scared about it..i connect with a doctor & i told him that i would like to take PEP within 72 hours but doctor said that you have no need to take this😣😣why doctor said that? Plz answer me