HELP PLEASE!

So my bf and I were messing around today. I am ending my period so I had a super tampon in. He just rubbed his penis on my butt and also touched my vagina(from the back side) with it, we started messing around some more and I felt something wet on my finger after touching him(pre cum). Have any of you ever gotten pregnant from this? I am on birth control. I even took a few extra today after I read some articles online explaining you could potentially take multiple birth control to potentially work as EC. Please let me know