Plan B and a Night Out

My boyfriend and I were being careless and tried the pull out method. Needless to say, he pulled out too late. We were able to get the Plan B. The thing is that we ended up meeting a couple of friends at the bar and fast foward to 5 hours later, I get too drunk and eventually vomit by the end of the night. I'm pretty sure I am okay, but I just would like peace of mind that I didn't vomit the Plan B out. Did it take into effect or did I just waste it? (I was having a very hectic weekend. Excuse my irresponsible self.) 😥😥😥