Nah, your fine... 9 hrs isn't a significant amount of time. Ive heard through many sources that if you take your pill within 12 hrs of when you were supposed to take it, you should be fine.. (so if you take your pill at 9 at night, but forget one night...As long as you take it before 9 the next morning you should be ok). I've forgotten a pill for more than 12 hrs before, and had sex (without any extra protection), and I was fine. Ive done that on more than one occasion too. So I really wouldn't worry.