unsure if im at risk of getting pregnant despite taking plan b

hi so Wednesday night my boyfriend and i had sex and the condom broke and he finished in me, i took a plan b around 2/3 hours after but i saw that on my period app i was in the middle of my ovulation cycle? idk how accurate that is because im young (18) and my periods have always been irregular by a week ish, and the app usually misses my period by 3-4 days. im a little paranoid that if i was in the middle of ovulation, that the plan b wont work because its supposed to delay it and that ill get pregnant.. 🥲 i know that sperm can live in the body for up to 5 days so would itbe a good idea to take another one in case?