Labor and Delivery Print Pre-term Labor Signs and Symptoms By Robin Elise Weiss, PhD, MPH twitter linkedin Robin Elise Weiss, PhD, MPH is a professor, author, childbirth and postpartum educator, certified doula, and lactation counselor. Learn about our editorial process Robin Elise Weiss, PhD, MPH Medically reviewed by Medically reviewed by Meredith Shur, MD on April 20, 2020 Meredith Shur, MD, FACOG, is board-certified in obstetrics and gynecology, as well as a certified medical examiner. Learn about our Review Board Meredith Shur, MD on April 20, 2020 Your Pregnancy Week by Week Overview First Trimester Week 1 Week 2 Week 3 Week 4 Week 5 Week 6 Week 7 Week 8 Week 9 Week 10 Week 11 Week 12 Week 13 Second Trimester Week 14 Week 15 Week 16 Week 17 Week 18 Week 19 Week 20 Week 21 Week 22 Week 23 Week 24 Week 25 Week 26 Week 27 Third Trimester Week 28 Week 29 Week 30 Week 31 Week 32 Week 33 Week 34 Week 35 Week 36 Week 37 Week 38 Week 39 Week 40 MattCarr/Getty Images Preterm labor, also known as premature labor, is a very serious complication of pregnancy. Unfortunately, many women do not understand the signs of preterm labor. Early detection can help prevent premature birth and possibly enable you to carry your pregnancy to term or to give your baby a better chance of survival. While some women are at a greater risk of preterm labor, it can happen to anyone in any pregnancy. This is why it is important to know the signs of preterm labor. Often, the sooner you can report that you're experiencing symptoms, the more likely it is that your labor can be stopped. Pre-term labor, also called premature labor, is defined as labor that begins prior to 37 weeks gestation. Signs and Symptoms Call your practitioner if you have any of the following: Contractions or cramps, more than five in one hourBright red blood from your vaginaSudden gush of clear, watery fluid from your vaginaLow, dull backacheIntense pelvic pressure If you experience any of these symptoms, call your practitioner right away. Call even in the middle of the night. You should have an emergency number but, if not, go to the nearest emergency room for care. Some women make the mistake of thinking that they couldn't be in labor because they aren't near their due date and so they don't call. This is not the way to think about it, so even if you're not expecting labor, if you think you might be in labor, get help immediately. 6 Can't-Miss Signs of Preterm Labor Risk Factors There are some women who are at a higher risk of preterm labor. This includes: History of preterm laborCarrying more than one babyInfection in pregnancy, including UTIHistory of smoking in pregnancyPrenatal exposures to certain drugs or chemicalsProblems with the cervixToo much or little fluid Factors That Combine to Cause Premature Birth Prevention While not all cases of preterm labor can be prevented, there are a lot of women who will have contractions that can be prevented or deterred by simple measures. One of the first things that your practitioner will tell you to do if you are having contractions is staying very well hydrated. We definitely see the preterm labor rates go up in the summer months and in women who are dehydrated. With dehydration, the blood volume decreases, therefore increasing the concentration of oxytocin (a hormone that causes uterine contractions) to rise. Hydrating yourself will increase the blood volume. Other things that you can do would be to pay attention to signs and symptoms of infections (bladder, yeast, etc.) because they can also cause contractions. Keep all of your appointments with your practitioner and call whenever you have questions or symptoms. A lot of women are afraid of "crying wolf," but it is much better to be incorrect than to be in preterm labor and not being treated. Management There are a lot of variables to managing preterm labor, both in medical options and in terms of what is going on with you and/or your baby. Here are some of the things that you may deal with when in preterm labor. Hydration (oral or IV)Bedrest (home or hospital), usually left side-lyingMedications to stop labor (Magnesium sulfate, Nifedipine, indomethacin, terbutaline, etc.)Medication to help prevent infectionEvaluation of your baby (Biophysical profile, non-stress or stress tests, amniotic fluid volume index (AFI), ultrasound)Medications to help your baby's lung develop more quickly (usually if preterm birth is inevitable) What to Do If You Think You're in Preterm Labor Prevention and Early Detection The keys are prevention and early detection. Make sure to ask your practitioner to describe the signs and symptoms of preterm labor to you and your partner at your next visit. If you know that your baby or babies are likely to be born early, you may be offered a tour of the neonatal intensive care unit (NICU). You might also have an opportunity to meet with specialists who can help with your care. Can Premature Labor Be Stopped Once It Has Begun? Was this page helpful? Thanks for your feedback! Get diet and wellness tips to help your kids stay healthy and happy. Sign Up You're in! Thank you, {{form.email}}, for signing up. There was an error. Please try again. What are your concerns? Other Inaccurate Hard to Understand Submit Article Sources Verywell Family uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy. Preterm labor and premature birth, March of Dimes, October 2015.