If you are not in ovulation, will you be pregnant?

In general, accurate ovulation refers to the dynamic monitoring of ultrasound follicle diameter up to 18 mm, has entered the mature state, can be ovulated at any time, called ovulation. This time period of cohabitation, the probability of pregnancy in more than 30%. Because ovulation period it is not constant, and artificial calculation of ovulation period is not accurate. Ovulation period with menstrual period is the same, affected by external factors, environment, emotional influence will make ovulation period ahead of time or delayed. Therefore, the so-called not in ovulation period with the same room, will not be pregnant, is to give a negative answer, but the probability of pregnancy is small, not can not be pregnant.