Am I pregnant?

The day I came off my period, Thursday, I had sex with my boyfriend after starting a new pill pack on the Wednesday. I took Thursday nights pill as well as Friday, so three pills in but forgot to take a pill last night on Saturday and won't be able to take another pill until later on today which will be after the 12 hour window you can miss a pill in. Is there a chance I could be pregnant as I have not had 7 days of taking the pill, and I have heard sperm can live inside you for up to 72 hours. Please help! Thanks

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