am i pregnant or am i just overreacting?

so my boyfriend and i has sex just 3 days ago (mind you we ALWAYS have sex with condoms and try to be the safest we can be) well he stopped all of a sudden because he heard a pop, turns out the condom tore. we rushed to get plan b, so i’ve taken it already however now i’m getting yellow discharge. could that mean anything or am i just worried for nothing? 😰