Will I Be Protected If I Have Missed My BC Pill And Taken It Later?

hello, i was wondering if anyone can help with my query about my contraception pill. last night I missed my cerazette pill at 9pm and this morning I had unprotected sex with my boyfriend at about 9/9.30am. I realised at about 3pm today that i hadn't taken my pill so took it straight away. Am I protected or could there be a chance of becoming pregnant?

thanks