When is embryo implantation?

The next important stage in the development of the embryo after fertilization of the ovum with the sperm is implantation. The baby is attached to the uterine cavity and begins to grow and develop. How many days passes between fertilization and implantation and is it possible to feel it? How long does embryo implantation last?

When does the embryo attach to the uterus?

Immediately after fertilization, the egg begins to move through the uterine tubes to the uterus. On this path, it can take 7-12 days, an average of about 10. The duration of movement of the ovule over the fallopian tubes depends on many factors, including their length. However, for a full development of the cell, nutrition is necessary, therefore, when stocks are running out, it is attached to the epithelium of the uterus. Uterine glands tend to facilitate this process, highlighting special substances that facilitate attachment of the embryo.

The time of embryo implantation can be up to two days, as it immerses in the uterine epithelium not immediately, but gradually, at first half, then completely, and only after a few days is completely covered with epithelium and begins to develop. Only after this, the implantation process is considered to be fully completed. The attached embryo stimulates the release of pregnancy hormones, which are responsible for its further development.

The day of embryo implantation, a woman who expects pregnancy, can note for small pulling pains in the lower abdomen and the appearance of a small amount of brownish discharge. Some women confuse this with the beginning of the next cycle, as embryo implantation roughly coincides with the expected start of a new cycle. However, increasing signs of toxicosis and lack of Menstrual bleeding may alert the expectant mother. If she does the test, she finds out she is pregnant, and will also know for sure on what day the embryo is attached in her case.

Precisely say - after how many days an embryo is attached - it is impossible, because you can not accurately determine the time of fertilization. After ovulation and sexual intercourse, it can occur both in the first hours, and in a few days. However, as a rule, it takes 2-3 weeks for fertilization and implantation. It is only for women who have undergone the IVF procedure to know exactly what day the implantation of the embryo took place, because embryo fusion in their case is known to within a few hours.