Late to take the pill after sex. Am I pregnant?

Georgia
Hi ladies,
My main form of contraception is the pill. I always take it at exactly 6am each day. 
Yesterday I had unprotected sex with my boyfriend and then today my alarm which usually goes off at 6 failed to work.
I woke up at 7am and took the pill straight away. 
Is there any possibility I could be pregnant or should I be fine?

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