What happens in the third week of pregnancy?

During pregnancy, women are looking for a detailed guide to the stages of pregnancy and the changes that occur to both the mother and the fetus, and the site provides this guide to find out everything that is happening week by week, and in this article, we explain what happens in the third week of pregnancy.

When does the third week of pregnancy begin?

The third week is calculated from the fifteenth day after the start of the last menstrual cycle (pre-menstrual) to avoid mathematical errors in the due date.

Through our website you can access the Pregnancy and Childbirth Calculator in Weeks and Days.

What happens during the third week of pregnancy?

The third week is considered the most important of all, given that it is the determining week for whether or not to become pregnant, and it:

Egg fertilization:

At the start of the third week, the egg is fertilized within 24 hours of ovulation (if intercourse takes place in the previous days), as the sperm travels through the vagina and through the cervix. uterus to finally reach the fallopian tube to meet the egg, and the sperm enters the thick wall of the egg to reach the nucleus of the egg and unites with it to form a fertilized egg (zygote), and at that time, the sex of the embryo is determined forever based on the type and genetic makeup of the entering sperm.

The fertilized egg begins to divide continuously to form more cells until it becomes a small mass of cells called (thymus) and is not seen with the naked eye, then it travels with the help of the fallopian tube to reach the uterus in a four or five day journey, during which the cell mass turns into something like a vicious lump.

In the ovary:

Once the ovary releases an egg, it begins to secrete the hormone progesterone with high levels of leftover follicle of the egg.

In the womb:

Meanwhile, near the fertilization site, the endometrium rapidly thickens and blood supply to the uterus increases under the influence of the hormone progesterone, in preparation for the arrival of the fertilized egg and implantation in the uterine lining.

The fertilized egg reaches the uterus around the sixth day after fertilization and gradually begins to implant itself inside the lining of the uterus, and from that moment the woman becomes pregnant.

How do you know when you are reaching week three?

Women usually don’t notice that they are going to conceive until the end of week four, but if you plan to conceive and notice small changes in the week after ovulation, you might notice some early signs of pregnancy. pregnancy:

• Breasts: Breasts usually become more painful when compressed during the early stages of pregnancy, and nipples may become more prominent with a slight tingling sensation and the appearance of veins under the skin significantly, and these signs are similar breast pain during menstruation.
• Tired: It starts in the early stages and can be accompanied by an unusual feeling of lethargy and sadness due to the rapid hormonal changes during this stage.
• Temperature: The slight rise in temperature that started with ovulation continues into the third week.
• pregnancy test: A positive pregnancy test usually does not appear until the end of the third week, as the test is based on measuring the levels of the hormone HCG in urine, which is a hormone secreted by fetal cells after implantation in the urine. the lining of the uterus, so if pregnancy is suspected, the test is preferred after the end of the third week.
  

  

  What should be done during the third week of pregnancy?

• Medical exam: To confirm pregnancy, determine the procedure for periodic examination and receive the necessary medical care during pregnancy.
• Take nutritional supplements: Doctors recommend taking 400 mg per day of folic acid supplement when planning pregnancy and during the first few months to avoid complications during fetal development.Your doctor may also recommend taking vitamin D supplements in depending on your state of health.
• Stop smoking and drinking alcohol.
• Do not take medication Without consulting a doctor to determine the possibility of taking it during pregnancy.
• Adhere to a healthy diet Avoid Eating Certain Foods and Drinks: In the following article, there is a detailed guide on the diet, foods and drinks that are recommended to be avoided during pregnancy.
• Exercise: Yes, exercise is safe for the fetus as long as it is within normal limits, and it is not recommended to stop exercising during pregnancy, but if you are not used to it. To exercise regularly, it is better to start gradually with simple exercises. As a general rule, do not engage in violent exercises or exercises that carry a risk of falling or exercises that cause panting or difficulty in breathing, and it is better to inform the doctor and trainers before the exercises to develop a training program adapted to each stage of pregnancy.

If in doubt about the occurrence of pregnancy, it is advisable to go to the doctor to assess the condition and determine the necessary tests to ensure the arrival of the newborn in the best conditions.

The transition to the first and second weeks of pregnancy.