How early to test digital pregnancy.

How early can we do digital pregnancy test? How many day past ovulation (dpo) will it detect? I just had protected sex (withdrawal with condom on), and it accidentally fall on the day i ovulated (i have irregular period so the calendar is always off) I forgot to test ovulation on that day as i was busy with baby. 100% condom did not tear or anything but i am extremely anxious as i went thru csect last 4 months. And everyday i am so anxious altho deep down i know i wont fell pregnant. Last time i usually test as early as 12 DPO. Any mummies accidentally did protected sex (withdrawal with condom on) on ovulation day and managed to not get pregnant😣