Question about BC pill and condom

Hey everyone! I’m hoping y’all can calm my nerves! Basically I am on the placebo week of my pills but I take them religiously at 9am every day. My boyfriend and I were having sex with a condom on. We thought sperm may have leaked out of the bottom of the condom after he ejaculated. I’m not sure if this can even happen, but if it did, would I get pregnant from this experience?