Natural Process

Natural Process

Once ovulation has occurred, there is only about a 24-hour window in which the egg can be fertilized inside the fallopian tube, the sperm attracts the egg by chemotaxis. After a single sperm enters the cytoplasm of the oocyte, cortical reaction takes place, preventing other sperms from fertilizing the same egg. Fertilization brings together 23 chromosomes from male and 23 chromosomes from female, resulting in the formation of a fertilized egg cell with 46 chromosomes. This fertilized cell is called a zygote.

The zygote undergoes multiple divisions to form a hollow ball of cells called blastocyst. About seven to eight days after fertilization, the blastocyst is burried into the endometrium , attaching itself to it. This process is called implantation

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Fertile Period

It is believed that around ovulation 24-48 hours is the best time for conception. After the sperms are deposited in the vagina, it is the mouth of the uterus (Cervix) which makes the sperms able to fertilize the egg. Thus it is suggested that the couple has an intercourse regularly from day 9 onwards, as the secretions in the vagina and the cervix provide nourishment to the sperms. As a result, we must realise that it is not only the day of ovulation, but prior days also are equally important for natural conception to occur.

In general, a woman’s fertile window is the day of ovulation (usually 12 to 16 days before the menstrual period begins) and the five days preceding it. For the average woman that occurs somewhere between days 10 and 17. But the problem is that few women are average. So the trick for every woman who is trying to conceive is to pinpoint her own individual, most fertile time.

One way to determine your individual fertile period is to keep a record of your menstrual cycle (for eight or more months, if possible). Select your shortest cycle (say 27 days) and subtract 18 from it. The resulting number—nine—is your first potentially fertile day. Subtract 11 from your longest cycle (say 30 days) and you get 19. This marks your last potentially fertile day. So if the cycles you measured over several months were between 27 and 30 days long, you would be most fertile somewhere between days 9 and 19.

This is still a very wide window of opportunity. You can narrow it further by charting your basal body temperature (your morning temperature before getting out of bed). For most women, it ranges from 96 to 98 degrees Fahrenheit. When your temperature rises slightly (four- to eight-tenths of a degree), it usually means you have ovulated within the past 12 to 24 hours.

One more method of identifying your fertile period is to notice changes in your cervical mucus. The mucus ranges from dry (following menstruation) to sticky (approaching ovulation) to wet, stretchy, and semi-transparent (during ovulation). Ovulation usually occurs from two days before to two days after the peak day of stretchy mucus.

While, as mentioned above, every woman’s cycle varies slightly, here’s a day-by-day account of what happens during an average 28-day cycle as the body prepares for a possible pregnancy.

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