3 Weeks Pregnant: Exciting Times Ahead For A Mom-To-Be Like You

3 Weeks Pregnant

Three weeks pregnant is an exciting time. This is when you are pregnant, unlike weeks 1 and 2 when you haven’t conceived yet. 

If you’re 3 weeks pregnant, you conceived about a week ago (during ovulation) and are ready to start growing a whole new life inside you!

The journey on which you’re about to embark is incredibly exciting. 

Nothing in the world is like the journey to motherhood, but just like any good journey, it comes with challenges. 

Knowing how to approach these challenges makes your pregnancy journey much more manageable.

Below we’ll cover all you need to know about being three weeks pregnant, including how you can best take care of yourself now and moving forward to give you and your soon-to-be child the best chance of a healthy pregnancy.

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What happens at 3 weeks pregnant?

At three weeks pregnant, the egg that has been released into the fallopian tube the week earlier (during ovulation) has been fertilized by the sperm. That means that at three weeks pregnant, you’ve already had a fertilized egg slowly multiplying in cells for about a week (or less).


Even though fertilization has occurred, and that egg has begun the journey to becoming a baby, it may still take some time before you can see the good news with your eyes on a pregnancy test. 

Home pregnancy tests will inform you about a positive pregnancy once you reach week four or later. 

Right now or over the coming week, a tiny cluster of cells known as an embryo (formed from that fertilized egg) implants (attaches) to your uterine lining (known as the endometrium). These cells are rapidly growing and multiplying and will soon become your baby. 

At the same time, your body releases large amounts of pregnancy hormones that help your baby grow, leading to some pregnancy symptoms.

The pregnancy hormone hCG (Human Chorionic Gonadotropin) is released in large amounts during your first trimester (first three months of pregnancy) and dips after. 

This hormone is produced by the cells of the developing placenta. It signals the ovaries to stop producing eggs. It triggers more significant amounts of progesterone and estrogen, which prevents the uterine wall from shedding and supports the baby’s growth. 

A home pregnancy test shows a positive result when it detects a significant level of the pregnancy hormone hCG.

Pregnancy week three symptoms

Early pregnancy symptoms are not always obvious, but you may notice some if you know what to look for. 

Sickness and tiredness may appear in a few weeks, but symptoms will probably be subtle.

Early pregnancy symptoms like bloating, breast tenderness, and mood changes can feel similar to PMS. Nothing is wrong if you don’t feel any pregnancy symptoms yet. Some women don’t feel symptoms until over a month into their pregnancy, and some don’t notice them even longer. 

Early pregnancy symptoms you might notice around week 3 include:

3 Weeks Pregnant

1. Sore breasts

Your body undergoes many changes to accommodate and prepare for the new life that has begun to grow inside. As such, you may notice extra breast tenderness or soreness around this time. 

This symptom may feel similar to (but more intense than) the tenderness experienced during regular PMS. You may also notice that your nipples have become extra sensitive and possibly darker.

2. Nausea, gas, bloating

Over the coming weeks and months, you’ll experience hormone surges that have a noticeable physical effect on your body. It may take a few more weeks to notice these physical symptoms, but some women experience them early in pregnancy. 

You may notice gas, bloating, and general gut discomfort now or soon. 

Many pregnant women also experience constipation at some point during pregnancy. 

Morning sickness is another common pregnancy symptom but doesn’t usually peak for a few more weeks. 

These effects are a normal part of hormonal changes in the body but can be soothed with some simple self-care tips, which we’ll cover later in the article.

3. Light spotting

You may notice some light spotting at pregnancy week 3. This may make you feel concerned and doubtful, but it’s nothing to worry about. 

Light spotting during pregnancy week 3 is entirely normal, known as implantation bleeding. It happens when the fertilized egg implants into your uterus’s wall. 

This light spotting should only last one to three days and be relatively pain-free. If you feel persistent pain at the same time, contact your healthcare provider.

4. Higher basal body temperature

One of the most effective ways to track ovulation and conception is to measure basal body temperature (BBT). This is the lowest temperature your body reaches in a given day, and this baseline increases during ovulation and after conception. 

It’s wise to start tracking BBT long before attempting to get pregnant so that you can more easily notice changes. If you’re pregnant and in week 3, your BBT will have increased compared to its usual temperature.

5. Missed period

The average menstrual cycle is 28 days, but it’s shorter for some women. 

You may notice a missed period around this week if your cycle is shorter. It may be late, but it also may not come due to pregnancy.

Self-care for Moms at three weeks pregnant

Preparing for motherhood is a big task, so this is a crucial time to take care of yourself. 

At three weeks pregnant, you may feel anxiety or anticipation. That’s completely normal, but try not to let it all get the better of you. 

The following are some simple but effective and important self-care tips for soon-to-be moms at three weeks pregnant.

1. Take care of your emotional health

Waiting for that positive pregnancy can be an emotionally tumultuous time. Every soon-to-be mom wants to do the best they can for their little one, and that role as a mother starts long before the child is born. 

At this time and moving forward, learn to check in with your feelings and emotions regularly.

When you notice anxiety rising or stress building, let relaxation and well-being be your utmost priority. 

Journal about complicated feelings, manage stress with exercise and a good diet and cultivate your support system. 

You may experience a lot of emotional ups and downs on this journey, so it’s essential to prepare stress management and relaxation techniques.

2. Eliminate toxins and cut down on stimulants

The healthier the physical state of your body, the better prepared it is to house a growing life. That means that any action and behavior in the direction of good health will help.

Like most people, if you’re a coffee fanatic, try reducing the caffeine you consume daily. 

During pregnancy, it’s best to avoid the overuse of caffeine, but you can begin cutting down even now. Get a head start to successfully a healthy diet during pregnancy. 

Try your best to cut out alcohol and tobacco if you use them. These toxins can harm the baby growing inside you, so keep your body clear throughout your pregnancy.

3. Get plenty of rest

Rest is perhaps the most common piece of advice given to soon-to-be moms. You’ll need more rest than usual throughout your pregnancy, especially when hormones make you physically and emotionally exhausted. 

Get into the habit of good sleep now so you’ll find it easier to sleep throughout the rest of your journey to motherhood.

Pregnancy week 3 FAQs:

Can pregnancy be detected at three weeks?

A home pregnancy test can help determine if you’re pregnant once you notice a missed period. Note that the test is more accurate the further along you are, so you may get a negative result at three weeks even though you’re pregnant. 

Home pregnancy tests work by identifying the hormone hCG in your urine, but in the early days of pregnancy, hCG may not be detectable enough to show up on a home pregnancy test stick.

A blood test, carried out by a healthcare provider, is more accurate than a home pregnancy test at detecting pregnancy. 

HCG shows up in blood sooner than urine, so you may be able to detect a 3-week pregnancy with a blood test.

When do you start to feel pregnant?

Some early pregnancy symptoms, such as light spotting or nausea, appear around week 3, but not every woman notices them. If you don’t see any signs by pregnancy week 3, don’t worry.

While some women experience PMS-like symptoms around week 3 (the week after ovulation and conception), many don’t notice until a few weeks later. 

The most noticeable early sign of pregnancy is a missed period, typically around week 4. Even then, you may not ‘feel’ pregnant and only know about a positive pregnancy through a home testing kit or a blood test. 

According to a study, most women don’t experience noticeable symptoms around week 5 or 6 of pregnancy, some until week 7 and some until week 8.

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Is it safe to exercise during week 3 of pregnancy?

Yes, it’s safe to exercise during week 3 of pregnancy. Regular exercise during pregnancy can help you attain and maintain optimal health for you and your baby. 

You don’t have to stop exercising just because you’re pregnant. 

Now is an excellent time to get started if you don’t already have a regular exercise routine. The healthier your own body, the healthier your baby will be.

It’s recommended that pregnant women get around 2 – 3 hours of moderate aerobic exercise per week during pregnancy. That means using large muscles in the body (arms and legs) in a rhythmic pattern at an intensity that raises your heart rate and makes you sweat. 

Walking, gardening, and light swimming are all examples of moderate-intensity aerobic exercises that are safe for pregnant women.

What are bad habits during early pregnancy?

Pregnancy is a time when your body undergoes a lot of changes. Housing a new life is no easy feat for the body, so it’s important to help yourself stay healthy. That means doing your best to eliminate unhealthy habits such as tobacco smoking, alcohol, and excessive caffeine consumption.

Stress management is also vital during pregnancy. Some of us don’t take simple yet powerful stress reduction techniques that are so readily available (deep breathing, aerobic exercise, sufficient rest). 

Allowing stress to persist is a bad habit but something you can curb.

Finally, be mindful of your diet. Remember that from now until birth, everything you eat or drink is also feeding your baby.

3 weeks pregnant

How does your belly feel at three weeks pregnant?

The pregnancy bump doesn’t show at three weeks pregnant. Usually, the baby bump starts to show in the second trimester (the second three months) of your pregnancy. 

However, remember that our bodies are different, and some women don’t get their baby bump until the end of the second trimester or the beginning of the third!


Since doctors count pregnancy by weeks from your last menstrual period, three weeks pregnant means you’re in prime conception time. That means the week earlier and this week are the best times to have sex if you want a successful conception. 

Remember that everybody is different so some women will be more fertile in pregnancy week two and some in week 3.

Whether you’ve successfully conceived or need to keep trying, remember that taking care of your mind and body these days is number one. 

There is an incredible journey ahead of you, so keep doing what you can learn and prepare as much as possible. 

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