UNPROTECTED SEX HELP!

i had unprotected sex with my boyfriend at 1am Monday morning, i’m still within the 72 hours to get plan b until tonight. should i still get it ?? better to be safe than sorry right? (before you guys start coming at me that i shouldn’t have had unprotected sex, the condom broke & we don’t know if any precum could’ve gotten inside of me or not because he didnt cum until after wards by a hj.) HELP!