First month pregnancy symptoms & fetal development stages


What happens in the first month of pregnancy?

All of the successful pregnancy is divided into 3 trimesters. Each of the trimesters is a little longer than 13 weeks. The beginning of the first trimester started, when the first  month of the pregnancy starts.

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What is gestational age?

Pregnancy timing is measured by using “gestational age.” Gestational age starts on the first day of your last period


Related – Pregnancy Due Date Calculator : How Many Weeks Pregnant Am I!

The Gestational age can be confusing. Most of the people think of pregnancy as lasting 9 months. And it’s precisely true that you’re pregnant for about 9 months. But because pregnancy is measured from the first day of your last period — about 3-4 weeks before you’re actually pregnant — a full-term successful pregnancy usually totals about 40 weeks from last period — roughly 10 months.

Many people don’t remember exactly when they started their last period —  but that’s OK. The easiest way to find out gestational age early in pregnancy is with an ultrasound.

Related – early signs of pregnancy before missed period

What happens during week 1 – 2?

Those weeks are the first 2 weeks of your menstrual cycle. Now you have your period. About 2 weeks later, the egg which are most mature is released from your ovary —and this is called ovulation. The Ovulation may happen earlier or later too, depending on the length of your menstrual cycle. Most of the average menstrual cycle is 28 days.

After released, your egg travels down your fallopian tube toward uterus. If the egg meets up with a sperm, then they combine. This is called fertilization. The Fertilization is most likely to occur when you have unprotected vaginal sex during the 6 days leading up to — and including the day of — ovulation.

What happens during week 3 – 4?

The fertilized egg moves down fallopian tube and divides into more cells. Then it reaches your uterus about 3–4 days after fertilization. Then the dividing cells form a ball that floats around in the uterus for about 2–3 days.

Your pregnancy begins when the ball of cells attaches to the lining of your uterus. And this is called implantation. The implantation usually starts about 6 days after fertilization and takes about 3–4 days to be complete.

It is happen ,Even if an egg is fertilized by a sperm, pregnancy doesn’t always happen. It is more than half of all fertilized eggs pass out of your body when you get your period, before the implantation is complete.

1 Month Pregnant: first month pregnancy symptoms and fetal development stages

Pregnant women might have noticed some changes in her body and started to wonder, “Could I be … pregnant!?” Even it is possible that, you might not have observed any pregnancy symptoms early , other than your period being late. Now, if you have your suspicions, you’ll probably want to take a home pregnancy test.

Then you must read on to find out more about some pregnancy symptoms early, how your baby is developing when you’re one month pregnant, and what else is in store for you this month.

Common Pregnancy Symptoms at 1 Month Pregnant

At the one month of pregnançy, you may not experience many — or any — symptoms.  some of the early signs of pregnancy at one month pregnant can include:

A missed period (A symptoms of early pregnancy)

If someone have a regular menstrual cycle, this is perhaps the most telling sign of pregnancy. May be you first suspect you could be pregnant when your period is late, and then when it never arrives at all.

Mood changes.

It is also a symptoms of early pregnancy
Whenever you become pregnant, your hormone levels start to rise dramatically, and this can sometimes leave you feeling more emotional than usual. It is also common that you experience a range of moods — anything from being anxious and overwhelmed to feeling excited and ecstatic — whenever you find out you are pregnant. Talk to your loved ones and nearest one about your feelings, and talk to your doctor if you have any concerns.


The raise of pregnancy hormones can lead to bloating, which you might even mistake for a normal symptom of PMS. So bloating can be a first signs of pregnancy  You should eat  more fiber and you also should do some  regular exercise, it’s can help relieve bloating.


Some of the would be mom get light uterine cramping in the early days,  and weeks of as a symptoms of early pregnancy . Some of the time, these sensations can feel like menstrual cramps, so you might think you’re about to get your period. If the cramps are painful or are bothering you, ask your gynecologist to recommend suitable pain relief options.


If someone notice some spots of blood on your underwear, it could be what’s called implantation bleeding , this is also can ,symptoms of early pregnancy. This light spotting can happen when the fertilized egg implants itself in the uterine lining in early pregnancy. One should Wear a panty liner,it can help prevent any accidental leaks or stains.

Frequent urination.

When a women become pregnant, the amount of blood in her body starts increasing. So frequent urination can be a first signs of pregnancy. It means your kidneys have to work overtime to process the extra fluid, which then ends up in your bladder. Although some early symptoms of pregnancy may ease up over time, this might not be one of them. But you don’t have to cut back on your fluid intake — it’s important to stay hydrated — but think about trying to pee before you leave your home or any time you might be away from a restroom for any length of time, such as before a meeting or a car trip.

Related – Frequent Urination During Pregnancy: Here’s All About

Sore or tender breasts.

It is also a first signs of pregnancy, In this time your breasts may be sensitive or even sore right now, but this symptom may subside in a few weeks because your body gets used to with the hormonal changes.

Fatigue, it can be a symptoms of early pregnancy

It is so true that, it’s not uncommon to feel a little more tired than usual, and the hormone progesterone may be to blame. You should take it easy as much as you can, and know that many moms-to-be experience a burst of energy once they enter the second trimester.


The morning sickness is a very common symptoms of early pregnancy (nausea with or without vomiting). It’s  often doesn’t hit until after the first month of pregnancy, but some moms-to-be may get it a bit sooner too. And obviously some lucky women may never experience any queasiness associated with early pregnancy at all. You should always try to stay hydrated, take a multivitamin, and sip ginger ale or ginger tea to help soothe your stomach.

Related –  Morning sickness symptoms: Causes, Treatments And Prevention 


In this time, when you are feeling a bit blocked up, chalk it up to those rising levels of hormones, which can slow down your digestive system. You should always take Prenatal vitamins, which typically contain iron, may also be a factor. Ask your doctor for advice on how to help get things going again.

Food aversions.

This symptom also very common first signs of pregnancy. When a women is newly pregnant, she might find that certain odors and flavors aren’t quite as appealing as they used to be. May be you feeling nauseous when you encounter certain foods and smells can sometimes go hand in hand with morning sickness. You should use a kitchen fan when cooking, and ask your partner to take out the garbage if certain smells start to bother you.

How Is Your Baby Developing This Month?

Just after the conception, the fertilized egg travels along the fallopian tube to the uterus, where it will implant in the uterine lining. Then the egg divides into a bunch of cells, some of which become the embryo and some of which eventually become the placenta, and which will provide nourishment for your baby during your whole pregnancy. Also the umbilical cord forms between the embryo and the placenta, delivering nutrients and removing waste. The upcoming months is a time of rapid growth for your little one, as internal organs, bones, and tiny limbs are beginning to form. During the first eight weeks, your little one, your unborn may be referred to as an embryo in medica circles, whereas after this point your baby may be called a fetus until she or he is born.

How Big Is Your Baby When You’re 1 Month Pregnant?

At this stage when you àre 1 month pregnant, your baby is teeny-tiny, but by the start of the second month of pregnancy your little one will be about ¼ of an inch long – or about the size of a pumpkin seed.

What Does an Embryo Look Like at 1 Month?

Now, you are looking for a glimpse at how your little one might be looking inside your belly at this time in 4 weeks, take a look at this illustration:

In this week, your little one have,A primitive face, and also it takes form with large dark circles for eyes. Also,the mouth, lower jaw, and throat are developing too. B Cells of the blood are taking shape, and circulation will begin too. At the end of the first month of pregnancy, your unborn child is around 6-7mm (1/4 inch) long -and it is about the size of a grain of rice.

Changes to Your Body at 1 Month of pregnancy

Probably you won’t be noticing any changes to your body just yet, but that doesn’t mean there isn’t a lot going on under the surface. At this stage, it’s important to prepare your body for pregnancy and childbirth by paying attention to your overall health and nutrition too. This is sometimes means taking a multivitamin supplement to make sure you have all the nutrients you and your little one will need for the months ahead. You must talk to your doctor at your first prenatal visit to make sure you’re getting the right amounts of the right vitamins. Also It can be helpful to begin or continue an exercise routine this month. Check in with your doctor to make sure your favorite activities are safe during pregnancy, but in general, getting regular exercise can help build the strength and endurance you’ll need throughout your pregnancy.

How Far Along Are You at 1 Month Pregnant?

At this time ,one month of pregnancy, you’re at the start of the first trimester.  There is no standard way of grouping pregnancy weeks into months (cause they don’t fit evenly), the first month usually includes week one through week four of pregnancy. The breakdown of each weeks into trimesters also varies; here is a common method we’ll follow:
First trimester: 1 to 13 weeks
Second trimester: 14 to 27 weeks
Third trimester: 28 to 40 weeks (or until you give birth)

FAQs at a Glance

How soon can you take a home pregnancy test?

Most of the home pregnancy tests are designed to detect the pregnancy hormone hCG in your urine. Typically, all these tests claim to work from the day after the first day of your missed period, but there is some brands,which are more sensitive than others.

Will you have a belly at one month of pregnancy?

Now You are on the brink of something pretty huge at this time,1 month pregnant, and it may be also thrilling and terrifying! Your upcoming baby is developing at the speed of light in your uterus, but if any baby bump you see this early days is likely to be caused by hormonal bloating, not actual your baby growth.

Is it safe to exercise during the first month of pregnancy?

In this time, It is best to favor low impact exercises — especially walking, yoga, and water aerobics — during this time.  There is some slightly more vigorous exercises may also be appropriate in the first trimester. Examples of these include slowly running, jogging, and moderate weightlifting too.


How big is an embryo when you’re one month pregnant?

At the end of the first month of pregnancy, your little one is around 6-7mm (1/4 inch) long – about the size of a grain of rice.

Confirm your pregnancy by taking a home pregnancy test.

Then you should read about the pregnancy hormone hCG as it is what most home pregnancy tests work to detect.


You should arrange a doctor’s checkup. Your healthcare provider or doctor will confirm your pregnancy and give you guidance on the appointments you’ll need to keep over the coming months.

Speak to your doctor about pregnancy nutrition and whether you need to take any prenatal vitamins, such as folic acid.

You should Quit unhealthy habits like smoking and drinking, and try to reduce stress.

Although it is  rare, but it’s a good idea to read up on the signs of an ectopic pregnancy – just in case.

Rest up whenever you can.

In this time you should speak to your loved ones about how you are feeling. This time can be an emotional time, and you might be feeling all kinds of physical symptoms and pregnancy emotions that it may be best to share.

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