Did plan B work?

Hi ladies, so I’m just trying to breathe easily bc I’ve been anxious. After I took Plan b (day after ovulation) 6 days after I had a light brown discharge, then my period came a day early it was bright red blood first light then full force heavy period with clots. Would this mean that Plan B worked? I’ve been feeling really terrible about having to use it and being irresponsible about sex, just trying to have some sense of calm after this month.