Pregnancy Calendar at Week 4

Mommy, hi there!

Do you know what happened today? I’ve gotten a little bigger — now I’m the size of a sunflower seed! Tiny, but already super important ❤️
Every day, I notice amazing changes. I’m no longer just a bunch of cells — I’ve started transforming into a tiny human. My form is still simple, but inside, future organs are already forming. You see, I have three layers, and from them, future skin, heart, muscles, and even your little baby feature with those lovely eyes, just like you 😊
For now, I don’t have a little hand or foot yet, but the tiny structures that will help me move, feel, breathe, and even talk to you are already beginning to form. And around me, everything is taking shape — my nourishing amniotic fluid, the future placenta called horyon, and my cute little yolk sac that keeps me fed until I can eat on my own. Isn’t it amazing?
I started breathing — not quite like you, but through tiny vessels pulling air in. And with you by my side, that’s the real team: you do your part, and I will grow and develop each day 💪
If there’s just the two of us — no worries! We share this space and love equally. Sometimes, we grow in separate little bubbles, and other times — together. But either way, we’re good, because you are my everything.
Until we meet again,
your tiny sunflower seed ❤️

What to Expect with Yourself

In the fourth week of pregnancy, a woman’s sense of wellbeing doesn't always match up with what's actually happening inside her body. However, if you're experiencing signs of a double pregnancy, they might already be showing at this stage, and she could start feeling typical early pregnancy symptoms like fatigue. Doing a pregnancy test at this point will give you accurate results, confirming whether you’re pregnant or not.

Changes in the Uterus

While the uterus isn’t very large yet, important changes are occurring within it. The inner lining thickens to become more dense, and the villi hairs develop and envelop the embryo at its attachment point. In the area of the cervix, the forming mucus plug acts as a barrier against infections.

Breast Swelling

By the fourth week, some women notice swelling of their breasts. This is a normal response to hormonal changes. The sensitivity may increase slightly. The nipples might darken, and light pigmentation could appear, but sometimes these signs are subtle or fade over time.

Overall Condition

During the fourth week, women may feel tiredness, sleepiness, headaches, and breast tenderness or discomfort. These symptoms are related to hormonal shifts after conception. The uterus itself may also become a little enlarged at this stage.

Immunological Disabilities

At this stage, a full medical examination of the pregnancy isn’t usually necessary. As long as the woman isn't noticing any unusual symptoms, it’s best to avoid unnecessary concerns by visiting a gynecologist. If she wants to confirm her pregnancy earlier, she can do a pregnancy test, but ultrasound scans will provide more reliable information later on. A well-equipped healthcare provider can detect the gestational age and determine the embryo's position inside the uterus, which helps confirm pregnancy.

Placenta

The placenta of a yellow body appears in every second woman. Its causes include previous abortions, hormonal imbalances, infections, and inflammations of female reproductive organs, or improper placenta implantation. Although this isn’t a serious threat, it requires careful monitoring, as the placenta may not develop properly or may detach.

Discharges

By the fourth week of pregnancy, women might notice abundant discharges. These are usually transparent or whitish and have a thick consistency. Such discharges are caused by hormone changes. If the pregnancy isn't confirmed, these secretions should not be ignored.

Leukorrhea

Leukorrhea, which is yellowish mucus, occurs in about every twentieth woman. Its causes can include previous abortions, hormonal imbalances, infections, or inflammation. It may form a mucus plug in the fallopian tubes, ovaries, or the lining of the uterus. Sometimes, the mucus is so thick that it might be mistaken for early pregnancy signs.

What Not to Do

  • Avoid lifting heavy weights, strenuous exercises, and activities involving high impact or contact in the gym.
  • Do not consume alcohol, drugs, or tobacco.
  • Avoid being around sick people, especially if they have infections like viral or bacterial illnesses. These can harm the pregnancy.
  • Do not take medication without consulting your doctor.
  • Avoid using herbal remedies or homeopathy without approval.
  • Refrain from hot baths and splash yourself with cold water before sleep.
  • Maintain an active lifestyle, including regular exercise and swimming or bathing in a pool.
  • Switch to light work if current stressors affect you.

What to Do for Your Future Mother:

  • Monitor your health and stick to a proper sleep routine, as it affects your immunity.
  • Take vitamin complexes recommended by your doctor.
  • Eat a balanced diet, adding natural sources of vitamins and minerals.
  • Spend time in fresh air, go for walks, and do outdoor activities.
  • Begin light exercises if there’s a hormonal imbalance or pregnancy-related discomfort.
  • Under medical supervision, get ultrasound scans and your first pregnancy photo.

What NOT to do

  • Avoid heavy lifting, strenuous workouts, and intense physical activities with weights.
  • Do not consume alcohol, drugs, or smoke.
  • Stay cautious around sick people, especially those with infections or illnesses.

Eating Right

Pregnancy calls for a lot of thought when it comes to your diet. Women are encouraged to review their food preferences and habits so they can support healthy fetal development. Doctors generally recommend reassessing your diet and including beneficial foods that enrich the body with necessary vitamins and microelements.
During the fourth week of pregnancy, it’s recommended to:
  • Avoid heavy, difficult-to-digest meals that can cause constipation and turn into stomach issues. Also, replace fatty foods with light, easily digestible carbs, proteins, and add a variety of vegetables, fruits, and grains to your diet.
  • If you’re feeling nauseous in the morning due to toxicosis, don’t skip meals or stop eating altogether. Instead, try small, frequent snacks like oatmeal, yogurt, or fruit.
A healthy pregnancy diet becomes especially important during this time. Check your diet, eliminate harmful foods, and add those that are rich in vitamins and microelements. Fruits, vegetables, berries, and dairy products such as cheese, yogurt, and milk are all good options. Aim for a daily intake of around 10 micrograms of iodine.
You can obtain iodine from seafood, fish, kelp, liver, eggs, and dairy. It’s a good idea to consult with your doctor to determine the right amount for you, but generally, a daily iodine intake of about 200 micrograms is recommended.

Calcium

Calcium plays a crucial role in the production of fetal bones and helps prevent premature labor and other complications. The calcium level in the mother’s body decreases during pregnancy, which can lead to bone loss over time. It’s recommended to maintain a daily calcium intake of about 20 mg, but your doctor should determine the precise dosage. Dairy products like yogurt, cottage cheese, liver, eggs, apples, almonds, and walnuts contain plenty of calcium, so regularly include them in your diet.

Vitamin E (Tocopherol)

Vitamin E is essential for internal fetal development from the first week of pregnancy. It activates metabolic processes and helps the body of the woman shed excess substances, improving blood circulation and providing the fetus with oxygen and nutrients. Vitamin E is found in nuts, fish, meat, liver, eggs, pumpkin seeds, sunflower seeds, and dairy products. The recommended daily dose is approximately 10 mg.

Iron

To ensure the proper functioning of the placenta and maintain hormonal balance, women need iron. A deficiency can lead to oxygen deficiency in the fetus, which ultimately might cause miscarriage. Therefore, it’s crucial to take iron supplements as recommended by your doctor. The usual daily iron intake during pregnancy is around 1200 mg. Iron can be sourced from seafood, meat, liver, eggs, and dairy products such as cheese, yogurt, and milk.

Iodine

For normal thyroid function and supporting hormonal balance during pregnancy, women need to carefully consult with their doctor before taking multi-vitamin complexes containing iodine.

Helpful Tips

If a woman is planning to get pregnant or suspects she might be, it's really important to pay close attention to her health. Avoid stress, don't lift heavy things, and most importantly, protect yourself from infections, colds, and flare-ups of chronic illnesses. These factors can sometimes trigger a miscarriage.
According to surveys, over 90% of women don’t experience strong cravings for intimacy during the first week of pregnancy. So, future dads shouldn’t push the issue or pressure their partners. This is a natural reaction of the body, focused on preserving future life. As the situation improves over time, a little patience will be enough.

Exercises for Future Moms

Staying physically active during pregnancy isn’t just okay—it's actually really good for you! It can help your body handle the extra weight, ease some of the common discomforts, and even prevent stretch marks, which often appear on the skin of pregnant women.
  • Strengthen your pelvic floor muscles to make labor easier;
  • Help you manage swelling and hemorrhoids;
  • Prevent the appearance of stretch marks, which often develop on the skin during pregnancy.
A trainer who understands your situation can select safe and effective workout routines. Just remember, if your doctor has restricted your physical activity due to risk factors, or if you’re experiencing bleeding, preterm labor, or other complications, do not push yourself and consult your healthcare provider before continuing any exercise.

Trouble During Pregnancy

Nausea and Vomiting

For some women, signs of toxicosis can appear as early as the 4th week of pregnancy. In most cases, nausea shows up in the mornings and after breakfast, and your digestive system might react with vomiting. Typical dishes that usually cause morning sickness are breakfast favorites, and some women find themselves unable to tolerate certain foods or even get overwhelmed by smells. Don't worry—within a few weeks, your condition should stabilize, and the nausea will fade away.

Change in Smell

During toxicosis, some women become much more sensitive to odors. Normal smells can trigger nausea, favorite scents might turn disgusting, and unusual odors can start to bother you. These symptoms of morning sickness usually pass as your hormone levels stabilize.

Digestive Discomfort

In the 4th week of pregnancy, some women may experience stomach upset. This isn’t always related to toxicosis, but it can be due to a weakened stomach lining, sharp contractions, and an overall feeling of fullness. During this time, your body needs to successfully accept the fertilized egg, and your appetite will direct all its energy towards this process. That’s why signals to rest and take care of yourself will become noticeable, helping your body recover and support a healthy pregnancy.

General Malaise

In the 4th week of pregnancy, some women may feel weak, dizzy, and overly tired. During this period, your body is working hard to nurture the developing fetus, and it's normal to feel somewhat exhausted. Listen carefully to your body—rest when you need it and give yourself ample time to recover. If you experience persistent symptoms, don’t hesitate to consult your healthcare provider to ensure everything is progressing smoothly and your pregnancy remains healthy.

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