Ovulation Day + Unprotected Sex

I had unprotected sex on my peak fertility day according to the app. This was three days ago. I am not on birth control, unfortunately didn’t take any emergency contraceptive. My partner definitely ejaculated in me. Given the likelihood of pregnancy, when should I test? I’m super nervous now but know testing so soon would be silly. My period is set to come in 12 days and I am extremely regular.