Have you been experiencing irritability, a nagging sore back, insatiable hunger pangs, and low energy? These unpleasant symptoms may result from either premenstrual syndrome (PMS) or pregnancy at the early stage. This symptomatic similarity may make it challenging to discern whether you are pregnant or merely coming up to menstruation. This article will help you to discover the true cause of your symptoms.

Fatigue

Fatigue is a common sign of both PMS and pregnancy. This exhaustion normally occurs during both the first and third trimesters of pregnancy. It is therefore possible to experience this fatigue before realizing you are pregnant, which might lead you to believe you are simply suffering from PMS. Pregnancy fatigue is caused by elevated levels of the hormone progesterone combined with reduced blood sugar and low blood pressure.

Food aversions or cravings

Food aversion is a common sign of early pregnancy. The once beloved scent of frying bacon will suddenly evoke nausea, due to an increase in the beta-hCG hormone. While these food aversions are only symptomatic of the early stages of pregnancy, food cravings can result from either pregnancy or PMS. While salty or sweet food cravings indicate PMS, cravings of a stranger nature typically appear during the first trimester of pregnancy. A common example of such a craving might be peanut butter and pickles eaten together.

Increased urination

This annoying physical symptom is exclusively experienced during pregnancy. To add insult to injury, this frequent urination typically occurs at night.

Tender and swollen breasts

This is a common symptom of both PMS and pregnancy. During PMS, women experience tender and slightly enlarged breasts, referred to as "cyclical mastalgia," or "cyclical mastodynia". This symptom in PMS disappears during menstruation, while pregnant women will experience markedly swollen and tender breasts 1-2 weeks after conception.

Morning sickness

This is perhaps the most distinctive and iconic symptom of early pregnancy. Morning sickness is an unpleasant feeling of nausea, which is sometimes accompanied by vomiting. Not all women have morning sickness during the early stages of pregnancy, but those who do may experience it as early as three weeks after conception. Morning sickness is not a symptom of PMS.

Slight bleeding or cramping

This can be a sign of either PMS or pregnancy. Cramping during PMS is a common occurrence and will vary in severity for each woman. Not all women will experience cramping during early pregnancy, but some will feel mild abdominal cramping. Spotting or slight bleeding may actually be the first sign of pregnancy. This spotting is known as implantation bleeding and is caused by the fertilized egg being embedded into the uterine wall.

Below I have outlined the symptoms experienced with PMS, pregnancy, or both. I have also detailed the slight differences for symptoms inherent to both PMS and pregnancy.

Symptoms

PMS

Pregnancy

Swollen and tender breasts

This will disappear once your period begins

This will manifest 1-2 weeks after conception and remain during the pregnancy

Morning sickness

This is not experienced during PMS

This is a common and distinctive sign of pregnancy

Spotting

Spotting is not experienced during PMS, just menstruation

Slight spotting is normal during early pregnancy

Cramping

This will differ in severity with each woman

Mild abdominal cramping may occur in early pregnancy, but not always

Food cravings

Cravings for sweet and salty food

Cravings for odd food combinations

Food aversions

Does not often occur during PMS

Aversions to certain food smells, sights, and tastes

Fatigue

Occurs during the days preceding menstruation

Experienced during the 1st and 3rd trimesters

Mood swings

Involves bouts of crying, anger, irritability, and sadness

Heightened emotions

Increased urination

Not experienced during PMS

Increased urination

Bowels

Constipation or diarrhea

Constipation

Missed period

You will experience your normal menstruation

You will miss your period

Menstruation

Menstruation

Menstruation will not be experienced

Back pain

PMS back pain is often radiated from pelvic or abdominal pain.

Lower back pain

Darkening of areolae

Not experienced during PMS

Darkening of areolae

Hopefully after reading this article you are now able to discern which of these two female conditions you are experiencing. If you are still unsure, you should either visit a doctor or take a home pregnancy test.

Discussions(11) Add New
  1. Bergren August 02, 2011 12:33 PM Reply

    Before I prepare to have a baby, I wonder how to differentiate pms versus early pregnancy symptoms. Now, I am pregnant, and I know morning sickness is an obvious indicator. During the early pregnancy, I fell very sick. This article’s content is very reasonable.

  2. Abner October 12, 2011 10:09 AM Reply

    After reading this article, I also know how to differentiate pregnancy symptoms and pms? Anyway, I have to take a pregnancy test before my husband comes back. I will give him a surprise. We want to have a baby for more than one year!

  3. Teji November 13, 2011 02:26 AM Reply

    Good article on pregnancy vs pms. It helps me to identify the symptoms. Thanks!

  4. Bjorn April 08, 2012 01:37 PM Reply

    According to my cycle, it will be my period. But I am preparing to have a baby. In the past two days, I have some pain in my abdominal, just like cramps. Many mommies tell me that they experience period like symptoms in early pregnancy. But what’s the difference between period pain and early pregnancy pain? After reading this article, I understand that PMS is very similar to pregnancy. The only way that I can do it is to take a pregnancy test.

  5. Giovanni June 05, 2012 03:01 PM Reply

    I have searched many topics on “pms versus early pregnancy” from Google. But I cannot find any useful information before I read this article. Clinictime.net is an excellent website providing professional content for lay persons. I have one suggestion for you. If you can show us the writer of this article and tell us the contact method, it will be better for us. I am willing to ask some questions after reading an excellent article like this.

  6. Mercer June 18, 2012 07:17 AM Reply

    I am pregnant. I took both home pregnancy test and blood test. In recent days, I feel period like symptoms in early pregnancy. After reading this article, I know the PMS and pregnancy symptoms are so similar that my period symptoms are absolutely normal.

  7. Vladimir June 22, 2012 06:51 PM Reply

    Are period and pregnancy symptoms the same? This article tells us the differences from fatigue, food aversions, urination, tender, etc. I think the most important difference is morning sickness which is not experienced during PMS. Good article. I love the table of this article.

  8. Monte July 04, 2012 01:08 AM Reply

    The table of pms vs pregnancy symptoms in this article is very clear. According to the table, I can easily know how to discern pms symptoms and period symptoms. Thanks!

  9. Pramath July 24, 2012 10:35 AM Reply

    How are pregnancy symptoms different from pms? After reading this article, I know it. Following the suggestions in this article, I just take a pregnancy test! I am pregnant! I am very glad!!!

  10. Clenc@gmksk.com August 09, 2012 10:33 AM Reply

    Frequent urination prior to menstruation is possible and does occur. Also back pain is common during pms. This info is not accurate!

    1. Administrator September 18, 2012 12:09 AM Reply

      Thanks for your suggestion! We are continually contributing and welcome futher feedback on our new knowledge posts. Frequent urination prior to metruation is possible but not common, so we don\'t list in the table. Back pain is common among some women, but it is radiated from other pain. We have use a more accurate description. Thanks!

  11. Alejandra September 12, 2012 02:28 PM Reply

    At one month it is possible for tests to come back negative, because the levels of pregnancy hormone aren't high enough in some people to make a positive test result (this happened to me when I was pregnant with my little girl). By two months the tests should be coming back positive.Symptoms could be breast tenderness, cramps, morning sickness, irritability different things for different people.