i found this on the cleo website, so maybe thats the way to go, dont you just love online trashy mags!
"sex Q & A birthcontrol
How long after just starting the pill do you have to wait till you can actually have unprotected sex?
According to Contraception: a user’s guide, by Anne Szarewski and John Guillebaud, if you start taking the combined pill proper (not the sugar pills that come in a 28-day pack) on the first day of your period, then as a rule, you will have immediate protection. Start any time after that, say the third day of your period, however, and you should take extra precautions. You should use those extra precautions for the next seven days.
It’s always best to read the instructions that come with your pill package and follow them! They will outline in detail when and how to take your pill, and when it becomes effective. Also, talk to your doctor if you have any questions at all.
The November issue of CLEO magazine, on-sale Monday October 21, features a Contraception special, which will answer all your questions about the Pill."