1st Month Of Pregnancy: Symptoms, Signs, Belly Pains & Stomach Size

1st Month Of Pregnancy: Symptoms, Signs, Belly Pains & Stomach Size

2 Aug 2022 | 7 min Read

Sayani Basu

Author | 607 Articles

Being a month pregnant is mostly like standing at the starting line of a marathon. You know you have miles to go until the end and you are all set for the challenge. There’s excitement and anticipation along with a lot of questions, especially if this is your first pregnany.

Here’s what to expect if you are in your 1st month of pregnancy. Scroll down to know the symptoms of pregnancy in first month.

What Does ‘1 Month Pregnant’ Really Mean?

Your pregnancy is dated from the first day of your last period and the actual date of conception can be difficult to pin down.

“1 month pregnant” means that your last period started about a month ago. Since you probably didn’t conceive your baby until about 14 days later, it is only two weeks old. Therefore, your baby will always be “younger” than your pregnancy.

Some pregnant mums get light uterine cramping in the first month of pregnancy. | Image Source: pexels

Common Pregnancy Symptoms At 1st Month Of Pregnancy

What are the 1 month pregnant symptoms? Some first month of pregnancy symptoms include:

  1. A missed period: You might suspect that you have conceived when you miss your period. 
  2. Mood changes: Thanks to the changing levels of your hormones. This is a very common one month pregnant symptoms. 
  3. Bloating: The surge of pregnancy hormones might also lead to bloating in the first month of pregnancy, which can even be mistaken for a normal symptom of PMS.
  4. Cramps: Some expecting mums get light uterine cramping in the 1 month of pregnancy which are similar to menstrual cramps.
  5. Spotting: One of the one month pregnancy symptoms includes spotting. You can notice some spots of blood on your underwear (implantation bleeding) and wearing a panty liner can help prevent any accidental leaks or stains.
  6. Frequent urination: After you conceive, the amount of blood in your body increases. This means that your kidneys have to work overtime to process the extra fluid and as a result ends up in your bladder. Hence, you need to pee more often.
  7. Sore or tender breasts: In the 1st month of pregnancy symptoms of pregnancy, your breasts might be sensitive or even sore due to the hormonal changes taking place.
  8. Fatigue: A month pregnant belly can also bring with it fatigue. Thanks to the rising levels of progesterone. 
  9. Nausea: The dreaded morning sickness hits you hard and might continue throughout your pregnancy.
  10. Constipation: You can blame the hormonal fluctuations along with the iron from your prenatal vitamin for constipation in pregnancy.
  11. Food aversions: You can also find that certain odours and flavours aren’t quite as appealing as they used to be before pregnancy. Hence, food aversions are common when you are in the month one of pregnancy.

These are some of the symptoms of pregnancy in first month.

Fetal Development – How Is Your Baby Developing This Month?

While you are flaunting your 1 month pregnancy bump, your baby in the womb is working hard on developing from a fertilized egg (full of multiplying cells) into an embryo and will become a foetus at the end of the second month.

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

Do you know the 1 month pregnant baby size?

The unborn inside the 1 month pregnant belly is only about six or seven mm in size and is growing quickly. It has already started to build up some of their organ systems.

While you are flaunting your one month pregnancy stomach, the placenta and umbilical cord have formed to nourish your baby throughout your pregnancy.

One Month Pregnant Belly-Bloat Or Baby?

When you have your one month pregnant belly, you will also probably have some abdominal swelling. However, it is caused by the first trimester bloating and not because of the size of your uterus.

In the 1st month of pregnancy, your uterus has started to expand but is still small. So, it’s not likely to be the reason for your tight-fitting denim.

What Does An Embryo Look Like At 1 Month?

When you are 1 month and a half pregnant, the embryo is about 1/4-inches long and is smaller than a grain of rice.

At this stage, a primitive face will take form with large dark circles for the eyes. The mouth, lower jaw and throat are all developing and blood cells are taking shape. Circulation will begin and the heart tube will beat 65 times a minute.

Changes To Your Body At 1st Month Of Pregnancy

You will not notice any major changes to your body while you flaunt your first month pregnancy belly. However, that doesn’t mean there are no changes going on under the surface. 

During the time of 1 month pregnancy, it’s important to prepare your body for pregnancy and childbirth by maintaining a balanced diet and remaining healthy.

You can consult your doctor and take a multivitamin supplement to make sure you have all the nutrients to support life within. You can also try pregnancy exercises after consulting your doctor.

How Far Along Are You At 1st Month Of Pregnancy?

At one month pregnant, you’re at the beginning of the first trimester.

The breakdown of pregnancy weeks into trimesters are:

  • First trimester –  One to 13 weeks
  • Second trimester – 14 to 27 weeks
  • Third trimester – 28 to 40 weeks (or until you give birth)

How Is Your Due Date Calculated?

Your doctor will usually use the first day of your last period to calculate your due date and add 40 weeks to that date. However, this only works if you have normal menstrual cycles.

It assumes that you conceived 14 days after your last period commenced and if your cycles are shorter or longer than the average 28 days, you might not have conceived around the day 14th of your cycle.

If you have an idea of when you conceived, you can talk to your doctor about adjusting your due date.

Meditating during pregnancy can keep stress at bay. | Image Source: freepik

Checklist for When You’re 1 Month Pregnant

Here’s the checklist when you are ‘1 month pregnant’:

  • You can schedule an appointment with a midwife to confirm your pregnancy after noticing the symptoms of pregnancy in first month as most doctors don’t see you until you’re at least eight weeks pregnant.
  • Ensure you are having adequate sleep and keep stress at bay.
  • Start taking a prenatal vitamin after consulting a doctor and ensure that it has at least 400 micrograms of folic acid.

When to See A Doctor?

The month 1 of pregnancy is a time of anticipation and excitement. You might be slaying your 1 month pregnancy belly at this time. However, it is advisable to consult your doctor if you experience:

  • Fever along with intense abdominal pain or cramping
  • Severe nausea, dizziness and headache
  • Signs of urinary tract infection or yeast infection
  • Bright red vaginal bleeding


You’re on the brink of an adventure that might be thrilling and terrifying alike! Although your baby is developing, 1 month pregnancy bump is likely to be caused by hormonal bloating, and not due to actual baby growth. Now that you know ‘symptoms of pregnancy in first month’ you will rock the journey. So, cheers and bring it on, pregnancy!


How soon can you take a home pregnancy test?

You can take a home pregnancy test from the first day of a missed period. If you don’t know when your next period is due, you can do the test at least 21 days after you last had unprotected intercourse.

Will you have a belly at one month pregnant?

If you have a belly in the first month, it can be due to hormonal bloating, and not due to actual baby growth.

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

You can exercise throughout your pregnancy after consulting your doctor.

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

When you are one month pregnant, the embryo is about 1/4-inches long and is smaller than a grain of rice.



Suggestions offered by doctors on BabyChakra are of advisory nature i.e., for educational and informational purposes only. Content posted on, created for, or compiled by BabyChakra is not intended or designed to replace your doctor's independent judgment about any symptom, condition, or the appropriateness or risks of a procedure or treatment for a given person.