I think that most women who get pregnant on the pill are either not taking it exactly right, even if you miss a day, it can lower the effectivenes. I took Ortho for a while, but had bad side effects, so went back to Triphasil, which I was on for 11 years, and never got pregnant. Anyway, I did get pregnant about two days after stoppign taking it, but that was because I had just gotten off steroids and being extremely sick, and I also take a medicine that can lower the effectiveness. Alot of women either don't know or forget that lots of meds, and certain health disorders (ie...overweight, seizure disorders, extreme sickness) can cause the pill to be less efective.