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Implantation: Top 11 Crucial Implantation Facts For Any Woman To Know

Understanding mechanisms of fertilization and implantation reveals some crucial information about how pregnancy occurs. If you understand how and when the fertilized egg implants into the uterine wall, you will know when to expect the very first pregnancy signs and on which day pregnancy tests can give a positive result. This article is meant for all women who are planning pregnancy in the near or distant future. We will look into the mysteries of implantation process, review its mechanism and signs. Being attentive and sensitive enough, you will be able to determine earlier than any diagnostics that a new live has come into existence inside you.

Read also: Implantation Bleeding or Period: a Small Quiz

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Understanding mechanisms of fertilization and implantation reveals some crucial information about how pregnancy occurs. If you understand how and when the fertilized egg implants into the uterine wall, you will know when to expect the very first pregnancy signs and on which day pregnancy tests can give a positive result. This article is meant for all women who are planning pregnancy in the near or distant future. We will look into the mysteries of implantation process, review its mechanism and signs. Being attentive and sensitive enough, you will be able to determine earlier than any diagnostics that a new live has come into existence inside you.

Read also: Implantation Bleeding or Period: a Small Quiz

Implantation Symptoms: 3 Main Indicators of Possible Motherhood

Implantation Bleeding: 7 Characteristics of Bloody Discharge During Egg Embedment

Cervical Mucus After Implantation: How to Detect Egg Embedment?

Fertilization And Implantation: How & When Do They Occur?

During ovulation that happens normally in the middle of menstrual cycle an ovary releases an ovum that travels to the end of Fallopian tube, waiting for fertilization.

Fertilization occurs in Fallopian tubes. Normally only 200-300 sperm cells reach this place, because cervical mucus works as a filter, letting only agile and healthy spermatozoa continue their way up. The most persistent sperm cells have a goal to meet the ovum and pass the 2 zones surrounding it. As soon as the fastest sperm cell completes the task, the ovum changes the structure of the last zone so that no other spermatozoon can pass the barrier. Thus, a zygote is formed, completing the fertilization process.

The fertilized egg now gets new programs to acomplish: continuous division and movement towards the womb. Special cilia, covering Fallopian tubes from inside, roll the egg like a ball. Approximately by the 4th day of such a journey the egg reaches the uterine cavity. On the 5-6th day it releases itself from the surrounding membrane. Blastocyst implantation starts on the 7-9th day.

What Is Implantation?

It’s an embeddment of blastocyst into the uterine wall. Localization of implantation has its appropriateness, being determined by special characteristics of endometrium. Usually blastocyst embeds into the front or back uterine wall. Further it submerges into endometrium.

Implantation process is associated with hormonal factors. The leading role belongs to sex hormones. During pregnancy the yellow body in the ovary, developed in the place of the burst follicle, functions actively. It produces much progesterone and a bit less estrogen. These sex hormones influence uterine mucous membrane through special steroid receptors in endometrium.

On average implantation process lasts for 2 days, accompanied by significant changes in endometrium. Blood vessels, capillaries and venules dilate in the vicinity of implantation area.

Embryo Implantation In Details

If your uterine endometrium is healthy, implantation will take 48 hours. During this time endometrium around the spot of attachment is thickening, blood vessels dilate. These changes indicate that your womb is ready to accept blastocyst. When it’s submerging into endometrium tissue, it gets covered with uterine cilia. Sometimes such an attachment causes insignificant bleeding that can be taken for early period. However, if it occurs, you’ll find just a few spots of blood on your underwear, no more. When a woman monitors her cycle and knows her ovulation period, she may count on pregnancy, if she doesn’t have any fertility issues and practices sex regularly, especially around implantation time.

Early Pregnancy Symptoms

You may have some symptoms or no symptoms at all. Besides, sometimes women take symptoms of other conditions for implantation symptoms. Scanty bloody discharge happens rather rarely than frequently. Moreover, it can have pathological reasons. One thing you need to remember is implantation bleeding, being very scanty, almost always passes unnoticed. If you notice something like spotting 4-7 days after intercourse or a week prior to the expected period, you can count on implantation. Sometimes spotting lasts for 1-2 days and stops. Spotting itself, if it’s caused by the embedment, doesn’t present any threats, however, if spotting repeats between 2 periods every cycle, you need to consult a gynecologist.

Objective Implantation Symptoms

  • If pregnancy occurs, the 2nd phase of basal body temperature chart demonstrates one-day fall of basal body temperature and then an increase. This temperature fall matches implantation.
  • Detection of hCG in blood (9-11 days after sexual intercourse) and/or urine (12-14 days after sexual intercourse).
  • Implantation spotting (possible).

Moderate low abdominal pains, general weakness, irritability and other symptoms, typical for premenstrual syndrome, belong to subjective implantation signs, which are experienced not by every woman.

Early Pregnancy: Implantation Facts For Every Woman To Know

  1. When the fertilized egg reaches the womb (day 4-6 after fertilization), it stays inside the uterine cavity unattached for the next 24-72 hours and only then begins its embeddment. Before implantation takes place, pregnancy doesn’t actually occur. If the egg can’t attach, the womb eliminates it and a woman doesn’t even suspect anything wrong. Normally only defective eggs are eliminated, however, you may deal with conditions, affecting endometrium.
  2. During 2-3 days while blastocyst stays unattached, it produces special substances, which suppress mother’s immunity, since her organism perceives blastocyst as a foreign body. Progesterone, in its turn, decreases uterine contractions, soothing its reaction to the foreign matter, letting it implant.
  3. Most often embeddment occurs into the back uterine wall since, from nature this wall is thicker and provided with more blood vessels: nature tries to protect future descendants, using its “tools”.
  4. When embeddment occurs, actual pregnancy starts, but gynecologists count this time point as 3 weeks of pregnancy, beginning from the 1st day of the menstrual cycle during which the pregnancy has occurred.
  5. Early miscarriages happen due to poor implantation, most often when period delays for 7-14 days (5-6 pregnancy weeks).
  6. If Fallopian tubes have any pathologies, like obstructions or curves, they create significant difficulties for implantation, because the egg’s movement towards the uterus becomes problematic. In this case the egg may stay in Fallopian tubes and implant there, causing ectopic pregnancy.
  7. The quality of endometrium changes before implantation. New endometrium accumulates biologically active components, necessary for the embryo nutrition. They include glycogen, mucopolysaccharides, lipids, ferments, immunoglobulins and micro elements, promoting implantation and further development of fetus. Healthy endometrium allows the egg to attach, while impaired endometrium practically always causes difficulties with conception or even infertility issues. Only a gynecologist can detect if you have any problems with endometrium.
  8. Only an insignificant percent of women literally feels implantation. They may experience nausea or some heaviness in the lower abdomen and notice implantation bleeding. However, not implantation itself, but hormonal changes trigger these symptoms.
  9. Late embedment may happen during period. Then a woman will find out about pregnancy only in a month when the next menstruation delay occurs.
  10. Although the 1-2nd weeks of implantation play a very important role in regards to the pregnancy forecast, the embedment itself lasts up to the 20th pregnancy week, until placenta develops completely and begins to function at its fullest.
  11. Blood test for hCG levels will give a reliable answer 9-11 days after sexual intercourse or do urine tests 12-14 days after conception.

As you see, the processes, involving fertilization, embryo formation and implantation turn out to be quite complicated. Scientists study their mechanisms, write many scientific works, do complicated researches, however, partially the very beginning of a new life remains a mystery, created by nature itself. Have a safe and healthy pregnancy!

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