Well, I know I never missed a pill during the time I took them. I just took mine whenever through the day .. and 10 months after I started taking them .. I found out I was 2 weeks preggers.
After I went and asked him how that could happen .. he asked me if I took it at the same time everyday. I said no. He asked if I had actually read the pamphlet that came with them. I of course, hung my head and said "no". And he reiterated exactly what the pamphlet said, word for word.
Nothing I could do at the time .. except kick myself in the arse . I read the pamphlets that come with my drugs now .
There are a million of other possibilities. Were you working out at the time? That metabolizes the pill much faster and is how someone I know got pregnant.
Were you taking other medications? Recreational drugs? Smoking?
Were your hormone levels correct? too low? too high?
I have a hard time believing that missing a pill after 8 hours is going to make you pregnant.