Took a plan b

So I took a plan b 3 days ago and honestly I took it bc me and my so were tipsy and exhausted and honestly can’t remember if he pulled out. I was on birth control 6 months ago but stop bc I had break through bleeding. So would you say me taking the plan b was effective and no I wansnt ovulating and we had sex 2 days after my period. Would the birth control still be in my system after being on it for a year?

Before you start judging i know pull out method doesn’t work, I’m NOT a teenager I’m 22 , we been together for 5 years and we just do NOT wants kids right now. We were drunk/tipsy and in the moment. Like I said I WAS on birth control but stop bc of break through bleeding.