Hello, I have been taking cerazette for two months now. I have missed three pills (across the three months) but have followed the instructions considering missed pills perfectly and have used condoms while pills were missed. However lately I have been experiencing breast tenderness and slight back pain, so would like to know the likelihood of pregnancy? Thank you :)

Any time you have intercourse you risk pregnancy. No method of birth control is 100% effective. If you skipped pills you needed to use condoms until you were sure you were protected. That can be three cycles.

The odds you are pregnant? There is no formula to determine that.

No form of birth control is 100 percent, so yes you can be pregnant, if never missed a pill and used condoms all the time. We have experts here, that it has happened to.

No way to tell odds and these are signs for dozens of things, so that does not help, just have to wait and see if a period is missed

FrChuck, maybe it's time to make a rubber stamp with your words - and we can all use it.