Plan b question.

So I took plan b about 2 weeks ago and like me and my boyfriend read all the side effects and all that , but I’m like known for having bad luck. So today I like started having pinkish discharge. Which idk because I just got off my period 4 weeks ago idk should I be concerned? ( also side note I only took plan b JUST INCASE we were using a condom but it broke so we went and got it just Incase, now we’re just worried about all the health shit yk )