When she isn't ovulating.
Conception usually occurs about 5-7 days after intercourse Your most fertile period is about 5 days before ovulation For most(but not all) women ovulation occurs about 14...
It's possible, with the right precautions. However, the only 100% way to make sure pregnancy doesn't happen is by not doing it. Otherwise, there's always a little risk that it will happen.
If there is not sexual intercourse involved, pregnancy is 100% impossible even if the woman is ovulating regularly. If there is sexual intercourse taking place at around the time of ovulation, many...