No, lying flat after sex won't increase your chances of conception.
By Jen Gunter, MD| April 15, 2020
Photo: Armando Veve
"As an ob-gyn, I’ve personally encountered many fertility myths in my office or online — some of them even during my training. Why do they persist? Sex education, particularly about the physiology of reproduction, is typically incomplete and subpar. And when we do talk about fertility and reproduction, we don’t talk about it directly — euphemisms for the uterus, menstruation, the vagina and the vulva are still common, and when you can’t use a word, the implication is that the body part is shameful. And, of course, many myths persist simply because they’re alluringly fantastical, and we’re inclined to believe these tall tales over the stodgy facts. Here are seven fertility myths that need to be forgotten.
1. Phases of the moon affect menstruation
This is not an uncommon belief-some women even refer to menstruation as their "moon time." The confusion is understandable: The 29.5-day lunar cycle (from new moon to new moon) is very close to the average 28-day menstrual cycle. But studies show no connection between the moon and menses. Moreover, it is hard to envision how a moon-menstruation would be biologically beneficial to human reproduction.
2. Reproductive hormones need to be ‘in balance’
This is a common modern myth in gynecology exam rooms all across North America-and it results in a lot of unnecessary testing of hormone levels. The truth is that, for women of reproductive age, the hormone levels for FSH, LH, estrogen and progesterone change not only day to day, but also often hour to hour. When a women has certain symptoms-for example, an irregular menstrual cycle or infertility-hormone testing may be recommended to make a diagnosis. But in these situations, doctors will look at individual levels in conjunction with symptoms, rather than comparing levels with some mythical "balance." Being "in balance" may sound natural, like a person who is "in tune" with her body. But it is simply not a factual statement, or even a good analogy, for what happens biologically."
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