4 weeks pregnant: characteristics or symptoms

At 4 weeks of pregnancy, or in the 5th week, symptoms may occur that indicate that there is a pregnancy. However, some women can notice that they are pregnant earlier, at about 3.5 weeks. Implantation is often felt and nausea and breast tension may occur early on. A pregnancy test can sometimes be done a few days before the expected menstruation (NOD).

2 weeks of pregnancy

Some women recognize the pregnancy immediately, while other women take longer. Pregnancy begins to count from the day of the first menstruation. When ovulation occurs around the 14th day, it is called 2 weeks of pregnancy. At this time you cannot recognize a pregnancy, because fertilization has not yet taken place. However, many women feel ovulation as a stabbing pain or cramp-like pain that can last for two days.

Recognize pregnancy at 3 weeks

The fertilization of the egg cell by a sperm cell occurs around ovulation. Sperm cells live for up to 3 days, so an egg can still be fertilized 3 days after ovulation. It is sometimes claimed that sperm cells can survive for up to 7 days, but that chance is small. Moreover, this seed has become of poorer quality and the chance of fertilization decreases sharply. The fertilization itself cannot be felt. This is because no changes in hormones take place at the time of fertilization. The fertilized egg does not implant immediately, even if the egg were fertilized in the uterus itself. This is because the egg needs some time to mature before it can implant.
A few days after fertilization, the egg cell has divided into a clump of cells. When the egg consists of at least 64 cells, a bulge has developed on one side. This is called the embryonic bud. This button allows implantation into the uterine wall. The clump of cells embeds itself firmly in the uterine wall, often in the upper half of the uterus. Half of all women feel this implantation as a stabbing or cramping pain reminiscent of the onset of menstruation. Some blood may also be released during implantation. This bleeding is harmless and is caused by damage to the highly vascularized uterine wall. Implantation takes place 5 to 7 days after fertilization. The woman is 3 weeks pregnant at that time.

4 weeks: HCG in the blood

The production of HCG (human chorionic gonadotropin) starts from implantation. This hormone is produced by the placenta, a part that arises from the clump of cells. The placenta connects mother and child and ensures the exchange of nutrients, oxygen and waste products. A non-implanted egg does not yet have a placenta, so the production of HCG before implantation cannot yet be noticed. Once the implanted clump of eggs starts producing the pregnancy hormone HCG, this doubles every 48 to 72 hours. Three days after fertilization, the woman is now 3.5 weeks pregnant, the HCG is approximately 2 to 35 IU/L. Symptoms may now occur that are caused by the influence of HCG. Many women notice early in pregnancy that their breasts are becoming fuller or are sore. Nausea may also occur. The HCG at 4 weeks of pregnancy is 3 – 426 IU/L. A pregnancy test measures the HCG value from 25 IU/L. Many women can test positive at 4 weeks, sometimes earlier when the HCG is sufficient. To avoid disappointment, it is better to test from 4 weeks of pregnancy. This is the day when menstruation should normally start again. There is another reason why it is better to wait before testing: more than half of all pregnancies end in miscarriage before 4 weeks. Many women do not notice the miscarriage because it occurs when menstruation is expected. The miscarriage is then mistaken for a normal menstruation. Anyone who has taken a pregnancy test early knows that she is pregnant, but must take into account that there is more than a 50 percent chance of a miscarriage. From 4 weeks of pregnancy onwards, that chance decreases to 10 percent. After 12 weeks of pregnancy, the chance of miscarriage is only 1 percent.

5 weeks: urination more often

The characteristics of a pregnancy become increasingly clear as the pregnancy progresses. At 5 weeks, many women notice that they need to urinate more often. This is partly caused by the action of the hormones. The major changes within the body make the bladder more sensitive. Later in pregnancy, the growth of the uterus will put pressure on the bladder, causing the need to urinate more often. At one month of pregnancy it is clear to most women that there is a pregnancy. Menstruation does not occur, the breasts are more sensitive, urination occurs more often and there is nausea, which is most severe in the morning. For many women, a pregnancy test is only confirmation of what they already sensed: you are pregnant!

read more

  • Hcg values table
  • Pregnancy symptoms
  • Pregnancy sickness
Scroll to Top