This is an especially intriguing myth — that orgasm can lead to spontaneous ovulation. In fact the process that leads to ovulation is the gradual increase of estrogen over a period of several days, not a sudden surge.

Not true! Women are only fertile the few days around ovulation. In fact, a human egg can only survive 12-24 hours after being released from the ovary, and thus the only reason women are considered fertile for longer than 24 hours (or 48 hours in the case of a multiple ovulation) is because sperm can [...]

This is simply not true. Even though the timing of ovulation can vary from cycle to cycle, once a woman ovulates, it is virtually impossible for her to ovulate again until the following cycle. This is because once ovulation occurs, the hormone progesterone will suppresses the release of all other eggs until the following cycle. [...]

While it is true that a human egg is only viable for 12 to 24 hours, a woman can actually get pregnant from an act of intercourse occurring anytime from about five days prior to ovulation to even occasionally two days after, for a total of about seven days. The reason for this is that [...]

Actually, a normal menstrual cycle can vary from about 24-36 days. And not only do cycles vary substantially among women, they often vary within each individual woman. One of the most unfortunate results of this myth is the needless anxiety that it causes women desiring to avoid pregnancy, who are led to believe over and [...]

Probably the most widely held fertility myth is the notion that women always ovulate on Day 14 of their cycle. If this were indeed true, there would be virtually no need for birth control, since couples could simply avoid that one day. And scores of couples desiring a child would simply have intercourse on Day [...]