Took PLAN B am I good ??

Haley • Proud Soon-To-Be Teen Mommy . Blessed with a baby boy 💙
So 2 months ago I had my son, on 5/22/16 he's precious and I love him but I don't want anymore children right now. I know some
Of y'all are probably going to lecture me but here we go. I started taking my birth control pill 4 days ago. I had sex on the 23 and took an emergency contraceptive the next morning. Then again I had sex on the 25th. Was the plan b still in my system ?? 
Am I pregnant ? 
My last period was from 7/9-7/15