That percentage is to become pregnant in the fertile days?

in:% .... Hey heard it's harder not to get pregnant get pregnant (I'm talking in fertile times) I know that I am fertile but it is harder still, but I am when people talk about this in that percentage is fertile days to get pregnant?

For just over two years, my wife has been undergoing treatment to get pregnant and have learned that humans have a 35% posibilides that our wives become pregnant in "normal conditions", ie as a species, humans are very efficient to procreate.

Well I'll tell you, do you know that are called fertile days?, Because by that, that are conducive to a pregnancy, if desired, then do not have sex or using birth control, what%? depends on you used during the relationship, as each method has its effectiveness ... a greeting.

to know when these fertile just use logic.
first look at the date of your period, the end has seven days in which you are not pregnant in the next seven days are in the highest peak of fertility, and the last seven days before the next period may be a probability of20 0 30%.
In fertile days pregnant the probability is 100% watch