Your Pregnancy

What To Expect When You’re 4 Weeks Pregnant

Your baby is the size of a poppy seed!
Dyanne Harvey

If you know you’re 4 weeks pregnant, then congratulations: that’s earlier than most people know!

At 4 weeks you might feel a little bloated, but hold your horses: you’re not going to look pregnant just yet. If you’re a first-time mom, you’ll probably have to wait until about week 12 to 16 for that bump to start showing.

Even though you’re not looking like a pregnant mama yet, it’s time to start treating yourself like one!

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How Big Is Baby at 4 Weeks?

4 weeks pregnant ultrasound

At this time, your growing baby is about 1mm long. This is smaller than a poppyseed, making her almost microscopic!

Even with her small size, there’s a lot going on. At this point, the fertilized egg has embedded itself in the side of your womb.

Amazingly, even at this small size, your baby’s sex, eye color, hair color and more have already been determined by their chromosomes.

Tips For a Healthy Pregnancy: 4 Weeks Pregnant

Diet – It’s never to early to get yourself going on a healthy pregnancy diet, assuming you’re not on one already.

Habits – If you’re a smoker, drinker or caffeine fiend, now is a good time to stop those habits. It might not be easy, but it’s for the best.

Reducing stress – Try to relax and keep your stress levels to a minimum. This is a good habit to get into for the entire length of your pregnancy.

Prenatal vitamins – If you haven’t been taking a prenatal vitamin up until now, it’s a good time to start. Be sure to look at our guide.

They’ll not only benefit your health, but they also make sure you’re getting all of those crucial vitamins and minerals your growing little one needs. Remember to take it every day!

4 Weeks Pregnant Ultrasound


4 Weeks Pregnant: Your Belly

At this point, you won’t have a bump showing yet, but your little one is steadily growing!

You’ll have to wait a little while before your bump starts to show itself.

Around the 10 or 11 week mark is about when it should be apparent, although that figure could change depending on your body.

4 Weeks Pregnant: Symptoms and Changes in Your Body

Bloating – Your body will start surge in its production of progesterone. Because of this, you might experience sore, heavy or tender boobs, and some bloating. Expect a little gas and stomach gurgling!

Spotting – If you notice light bleeding around this time, fear not; it’s a result of implantation and totally normal. However, if the bleeding seems heavier, there’s a lot of it, it lasts for more than a few days, or you’re worried about it, see a doctor.

Morning sickness – Around 85% of women will experience morning sickness during their pregnancy, so if you do too, you’re in good company.

The symptoms can range from anywhere between just a faint feeling of nausea to outright vomiting but never fear: these symptoms usually go away by the end of the first trimester.

Mood swings – Caused by hormones, mood swings are something that might start to happen around now.

And be ready for it, because they’re going to be there for the first trimester, and likely come back to visit in your third.

Cramping – If you experience something that feels something like period cramps during this time in your pregnancy.

They may be a little more intense or feel slightly different than your period cramps, so don’t be too concerned if you feel something like that.

Exhaustion – Your body is going through a lot of changes, and it’s normal to feel absolutely exhausted during this time.

Not to mention that you’re supposed to be cutting caffeine at this time, which is going to make for one sleepy and possibly-cranky mama.

4 Weeks Pregnant: With Twins.

If you’re pregnant with twins, your first trimester symptoms may be more intense. This is because if you’re carrying twins, you’ll have elevated hormone levels.

You won’t find out if you’re carrying twins until your first doctor’s appointment, which generally happens around week 8.

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