What To Know About Pregnancy Cramping in Every Trimester

Medically reviewed by Alyssa Dweck, MS, MD, FACOG

Key Takeaways

• Mild cramping during pregnancy is common and often caused by normal changes like uterine growth or hormone shifts.
• Some cramping can signal serious issues, so contact a health care provider if it's severe, persistent, or paired with other symptoms.
• Rest, hydration, and gentle movement can help ease mild pregnancy cramps, but always check with a provider if you're unsure.

Pregnancy cramping is a common symptom across all trimesters, and while it can be alarming, most mild abdominal cramps aren't dangerous. These cramps are often a natural response to the bodily changes that happen during pregnancy.

This guide will help you understand cramping throughout pregnancy, offer relief strategies, and give advice on when to consult a health care provider.

Are Cramps During Pregnancy Normal?

You might wonder if the cramping is from normal uterine stretching and growth or a sign of something wrong. Also, because there are numerous causes of cramping and your body changes rapidly during pregnancy, the answer to what's going on isn't always obvious. 

Even though cramps can sometimes indicate problems, mild and transient cramping, especially early in pregnancy, is often a normal physiological response to what is happening in the uterus during pregnancy.

Some scenarios other scenarios when cramping in pregnancy is common and generally not a cause for concern include:

• After sex

• When changing positions makes the cramps better or worse (usually indicates stretching or round ligament pain)

• If you feel better after passing gas (indicates a gastrointestinal issue rather than a uterine issue)

Cramping After Sex

Doctors say you shouldn't worry about cramping after sex, whether partnered or solo. "Intercourse is one of the most common causes of cramping," says Dr. Puritz.

With vaginal penetration—whether with a penis, fingers, or toy—you can come into contact with the cervix. This can cause some mild cramping if bumped or stimulated.

Additionally, semen contains prostaglandins that can stimulate the uterus. So, if you have penis-in-vagina sex and your partner ejaculates near your cervix, you may experience some cramping afterward. Last but certainly not least, orgasm can lead to temporary uterine cramping.

Dr. Puritz adds that for most pregnant people, it's completely fine to have sex , and if you have cramps afterward, stay hydrated and try moving your body afterward.

Cramping in the First Trimester

"The majority of pregnancies will have some mild (light) cramping intermittently during the first 16 weeks," says Chad Klauser, MD , Clinical Assistant Professor of Obstetrics and Gynecology at the Mount Sinai School of Medicine in New York City. Here are some common causes of first-trimester cramping.

Implantation cramping

For some people, cramping is one of the first signs of pregnancy, as it sometimes happens when the fertilized egg burrows into the uterine wall. This phenomenon is known as implantation cramping , and it can feel like your period is about to start, explains Holly Puritz, MD , medical director for Sentara Leigh Hospital Group for Women in Norfolk, Virginia.

Uterine growth

Rapid uterine growth in the first two trimesters of pregnancy can also lead to a pulling sensation within the abdomen, says Dr. Klauser. Your uterus must stretch and expand to accommodate your growing baby, which can cause periodic cramping.

How Long Does Cramping Last?

Cramps that feel similar to menstrual cramps are most common during the first and second trimesters of pregnancy. This normal early pregnancy cramping usually lasts from a few minutes to a few hours. The cramps are usually mild and may lessen with position changes. In most cases, there's no immediate cause for concern if the crampy pain you feel isn't severe, one-sided, or accompanied by bleeding. That said, be sure to call a health care provider if you have any questions or worries about cramping in early pregnancy.

Gastrointestinal issues

Changing hormone levels might cause increased gas, bloating, and constipation during the first trimester. All of these gastrointestinal issues can trigger cramping sensations.

Ectopic pregnancy

In rare cases, first-trimester cramping could be caused by an ectopic pregnancy (when the embryo implants outside of the uterus, usually in the fallopian tube). Ectopic pregnancy often involves one-sided cramping, bleeding, lightheadedness, or shoulder pain.

Ectopic pregnancy can be life-threatening. So, contact a health care provider immediately if you think you may have symptoms of ectopic pregnancy.

Miscarriage

Miscarriages most commonly happen because of abnormal embryonic development (usually caused by chromosomal abnormalities ). The cramping associated with miscarriage occurs as the uterus contracts to expel blood and tissue.

According to the American College of Obstetricians and Gynecologists (ACOG), miscarriages occur most often in early pregnancy (80% of the time) and occur in up to 10% of clinically recognized pregnancies.

Aside from cramping, the most telltale sign of miscarriage is heavy bleeding that doesn't let up. Contact a health care provider right away if you suspect miscarriage.

Cramping in the Second Trimester

You are less likely to experience cramping during the second trimester, though, of course, it is still possible. An exception if you are pregnant with multiples since the uterus grows more rapidly and will reach third-trimester proportions in the second trimester.

Here are some other causes of second-trimester pregnancy cramping.

Round ligament pain

This benign pain can begin around week 13 of pregnancy when the ligaments that support the uterus stretch as the uterus grows upward. Round ligament pain is usually quick and sharp and can feel like a pulling/tugging sensation. It can be one-sided or appear on both sides. Round ligament pain occurs in 10% to 30% of pregnancies.

Urinary tract infections

Mild urinary tract infections (UTIs) can also cause cramps during pregnancy in the second trimester. Other UTI symptoms include:

• Painful urination

• A frequent need to pee

• Lower abdominal discomfort

• Blood in the urine

Contact a health care provider if you think you have a UTI .

Uterine fibroids

A more serious but rare cause of cramping is uterine fibroids. These harmless overgrowths of tissue can start breaking down in the second trimester (usually between 15 and 18 weeks of pregnancy) because there's not enough blood to sustain their growth, and the pain is severe.

If you have a history of uterine fibroids, watch for pregnancy cramps at this point. Some people need hospitalization to manage the pain effectively until it passes.

Cramping in the Third Trimester

By the time you get to your third trimester, your body will be so busy doing so many things that cramping may begin to feel like just a part of your routine. From baby kicks and indigestion to "practice" contractions and even pre-term labor, there are many reasons for cramping this late in the game.

Braxton Hicks contractions

It's very common to experience cramping in the third trimester in the form of Braxton Hicks contractions . These "false" or practice contractions don't actually progress into labor, but they can help prepare your body for delivery.

While Braxton Hicks contractions only last between 30 seconds and two minutes, you can often relieve symptoms by drinking some water, changing positions, and resting.

Preterm labor

Of course, if cramping in the third trimester doesn't quickly subside and continues to progress, you could be experiencing preterm labor, which is labor that begins before 37 weeks of pregnancy. Some signs of preterm labor include:

• Change in vaginal discharge

• Water breaking

• Regular contractions

• Pressure in the pelvis

• Low backache

• Cramping, sometimes with diarrhea

If this happens, call a health care provider right away; they might want to evaluate you.

Other causes of late pregnancy cramping

There are other serious causes of cramping in late pregnancy, including placental abruption (when the placenta separates from the uterine wall). Call a health care provider and seek medical care for any cramping during pregnancy that is accompanied by bleeding, severe pain, shortness of breath, or other worrisome symptoms.

When To Call a Health Care Provider About Cramping in Pregnancy

On the other hand, certain scenarios indicate that something more serious could be happening. Watch out for the following red flags and inform a health care provider ASAP if you notice them.

You have six or more contractions in an hour

Having six or more contractions in an hour could be a sign of preterm labor. Also, watch for other symptoms of preterm labor, including changes in vaginal discharge, pelvic pressure, and dull backaches.

You also have dizziness or vaginal bleeding

It's especially important to call a health care provider if you experience cramping in early pregnancy along with other symptoms including:

• Dizziness

• Lightheadedness

• Vaginal bleeding

If you haven't yet confirmed your pregnancy with an ultrasound, these could be signs of an ectopic pregnancy. Bleeding can also be a symptom of miscarriage or placenta previa , a condition in which the placenta covers the cervix, either partially or completely.

You have persistent cramping

If you have persistent cramping, contact a health care provider. Be especially concerned about frequent cramping in the following situations:

• You are pregnant with multiples (which increases your risk of preterm labor)

• You have a history of preterm labor

• You have had an ectopic pregnancy

• You have been diagnosed with a shortened cervix

You have intense pain with nausea or fever

Back cramping or pain in your abdominal area could be symptoms of non-pregnancy-related conditions, such as appendicitis, kidney stones, and gallbladder disease.

It's always better to be safe than sorry and contact a health care provider when it comes to cramping, especially when accompanied by other symptoms.

Your cramps aren't improving over time

It's also important to get checked out if changes in physical position and time don't alleviate the cramping sensation.

You have signs of preeclampsia

Symptoms of preeclampsia include the following:

• Pain in the upper-right side of the abdomen

• Headaches

• Nausea or vomiting

• Swelling

• Vision changes

• Sudden weight gain

• Trouble breathing

Preeclampsia symptoms usually show up in the third trimester.

Other Causes of Cramps

• Stomach flu

• Fibroids

• Gallstones (which can lead to pancreatitis)

• Food poisoning

How To Relieve Cramps During Pregnancy

If you have pregnancy cramps that don't seem worrisome, Dr. Puritz advises getting off your feet, resting, drinking fluids, and taking Tylenol (acetaminophen) if needed for pain relief (though check with a health care provider first before taking any medications). 

""I always tell my patients that I love a false alarm. I'm happy to see you and say you're fine rather than miss something where I could have intervened." - Dr. Puritz"

Though you may be tempted to use heat for relief, avoid hot baths and heat packs on your abdomen because raising your core temperature is dangerous during pregnancy, especially in the first trimester. (Using one on your extremities, however, is fine, Dr. Puritz says.)

Dr. Klauser recommends trying a warm shower. Stretching and sitting breaks throughout the day can also be helpful, particularly if you find that your cramping is worse after long periods of being in one position. Another tactic might be utilizing a pregnancy support belt .

Most importantly, always contact a health care provider for unusual cramps or ones that don't go away. "I always tell my patients that I love a false alarm," says Dr. Puritz. "I'm happy to see you and say you're fine rather than miss something where I could have intervened."

Additional reporting by Krissi Danielsson .

Read the original article on Parents