What are the chances of becoming pregnant while on the pill?

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I have been taking birth control for 2 1/2 years rarely forgetting a pill. Last month I skipped my sugar pills and went straight into active pills so I wouldn’t have a period (vacation reasons) My boyfriend and I had unprotected sex last week. Is there any chance that I could have gotten pregnant?

http://www.plannedparenthood.org/birth-control-pregnancy/effectiveness.htm
According to that chart, out of 100 women studied for a year, 8 women got pg taking the pill "typical use" and .03 got pg while using the pill perfectly.
no. i used to do that all the time. there’s less than a 1% chance you’re pregnant.
Yes, I missed one pill and my son is here to prove it…..Any time you have sex, there is a chance. When a pill is missed or you play with the pill regiment, you have raised your chances. The best thing to do when not taking the exact cycle of pills is to use another form of protection.