If you're trying to procure pregnan...

If you're trying to procure pregnant, your calendar is probably filled with all sorts of dates and times. unless is your "fertility window" as predictable as you think? Not necessarily, say researchers at the National Institute of Environmental Health Sciences (NIEHS) in Durham, NC

Traditional wisdom restrains that there are six days in the middle of the menstrual period when intercourse can result in pregnancy. still a new study, published in the British Medical Journal, fix that late ovulation was a everyday occurrence and that some women are actually fertile from beginning to end their entire menstrual cycle.

Researchers analyzed daily urine samples from 213 healthy women ages 25 to 35 who were planning to gain pregnant. The participants also kept a diary that included, among other information, when and for what reason often they had sex. Lead researcher Allen J Wilcox, MD noted that it took several years to analyze the 30000 urine samples and diaries.

"In undivided sense," says Wilcox, "what we're describing is in what way much variability there is in individual women--how lengthy the cycle lasts and when ovulation occurs" In the case of this contemplation the earliest onset of ovulation occurr onward day eight (day one being the actual start of menstruation); the latest was day 60 According to the researchers, the data refer to that there are few days in women's revolution of times during which they are not potentially fertile, including the day they await their period to begin. The investigation did note, however, that timing isn't everything. Pregnancy also hangs on the viability of the seed and egg, the receptivity of the uterus and other factors.

in this way what does this mean to women who are trying to conceive? Wilcox glance ats forgetting about fertile windows. "Most couplings who are trying to conceive will have sex up to five or six times a week. [With that frequency] principally will conceive within three to four cycles" he says. "It's best to lease nature take its course."

The corollary is that pairs using the rhythm method as birth rule might be in for a agitation Cautions Wilcox: "Women who are more casual because their periods are fairly regular might be surprised to know they're fertile onward days they don't expect."

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