I took plan b while on my period

Faith

So on Friday my period started and me and my boyfriend decided to have sex he ended up finishing in me without telling me till after, the next day he went to go get the morning after pill(plan b) and I took it now I’m not bleeding anymore on my period is that good or bad and does it mean that it’s working ? Also I don’t ovulate like untill 2 weeks and my fertile days are 4 days after my period