How long after starting Ortho Cyclen is it able to prevent pregnancy?

Once starting Ortho Cyclen, how long after taking it correctly would I be protected against pregnancy? I have heard 7 days, a month, three months. I know its not 100% but its close when taking it correctly and I was just curious how long I need to be on it to be as close as possible.

by your 2nd pack

If taken at the same time everyday it takes 1 week to be absolutely safe.The pamphlet should tell you thatAll oral contraceptives are the same in that regardHopefully that helps If you have any doubts go on to their website

My doc told me at least one month, to be safe. That was when I switched from the ring to the pills. Then I got chastised for not using condoms :-(