Do you use condoms ? Watch
We use different types of birth control though and have each had STD tests.
so if you have sex 100 times (e.g. twice a week for a year) you'll get pregnant once
I thought it meant that every time you have sex you have a 1/100 chance of getting pregnant. I'm sure many people have sex more than twice a week for a year and don't get pregnant whilst on the pill.
But it can't be true that if you have sex 100 times you'll get pregnant once?
confusing isn't it
but my gf is on the pill now so it's alright atm
It's false information. Whether you 'invented' it or not, it's still false. Your opinion is completely irrelevant here. How a medication works is not a matter of 'opinion'.