He came inside of me

Steph • 25, Canada

Me and my boyfriend just finished having sex and the condom broke, he told me right away.

How long can I wait to get plan B? I believe I have 5 days, but I'm not sure. This has never happened to me before. What is the success rate with plan B? What happens once I take the pill, and what's the average cost?

Thank you everyone! I'm really worried about this so I appreciate your comments.