What are my chances???

Hannah • 16 years old, have been with my SO for 6 months now, he`s my life <3
I'm on the pill but my pills were late last month by a week so my system is messed up I had sex when he was trying to get in after a few tries it broke. Right on the out side of my vagina there was a lot of precum. Is it possible that I could get pregnant from this??