Missed pill 24hr before sex. took pill day of but not days after. could i be pregnant?

Maybe: If you are fertile and your male sex partner is fertile and you don't use protection and you continue to play russian roulette with your pill dispenser - it should happen sooner or later. For the most recent time - it depends on your ovulation time w/ respect to having sex. If it matters to not get pregnant - find a much better method to prevent it. Really, take care - it matters.

Unlikely: Get pregnancy test in next two weeks to be as certain as possible. But very unlikely the slight delay in pill made you vulnerable.