Implantation of sperm to egg

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By the fifth or sixth day after fertilization, there are so many cells still packed into the same hard, tough zona pellucida that individual cells can no longer be recognized. The increase in estrogen indicates to the pituitary that the follicle is ripe, and this beautifully times the release of the LH hormone. Once the egg starts to develop, it proceeds inexorably and no longer has the choice of returning to being quiescent. Unlike pains associated with the release of the egg mittelschmerz , there is seldom any kind of cramping or physical awareness that implantation has taken place. If the HCG does not increase, a miscarriage is very likely, and the pregnancy is referred to as a chemical pregnancy. However, the decidual cells make up a new layer, the decidua. Following penetration, a series of events set the stage for the first cell division.
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Implantation Bleeding Spotting or Menstrual Period? Know the Difference and When Does It Happen?

Just prior to ovulation it becomes almost optically clear, although it is translucent at other times. Receive exclusive discounts on our most popular products for trying-to-conceive, pregnant, or breastfeeding couples. However, within a matter of minutes, one or two spermatozoa begin to make an indentation in the line separating the cervical mucus from the ejaculate.
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