Are period cramps similar to contractions?

Period cramps and contractions during pregnancy both involve the uterus tightening. Period cramps happen because of chemicals called prostaglandins that make the uterus contract to help shed its lining. Period cramps can be painful but are a normal part of the menstrual cycle.

On the other hand, labor contractions in a pregnant woman occur when the uterus tightens to help push a baby out during childbirth. They are usually stronger and more regular than period cramps. If labor contractions occur much earlier than when a baby is expected to be born, it can sometimes be a sign of preterm labor, which means the mother's body is preparing for labor too soon and the baby might come earlier than expected.

If you experience cramps during pregnancy, it's important to talk to your healthcare provider as soon as possible. They can help determine if the contractions are preterm labor or something else. For example, during the third trimester of pregnancy, some women experience cramping sensations that are Braxton Hicks contractions and a normal part of pregnancy. Unlike true labor contractions or preterm labor contractions, Braxton Hicks contractions are usually irregular and do not increase in intensity or frequency.

Even though period cramps, labor contractions, preterm labor contractions, and Braxton Hicks contractions all involve the uterus, they are not the same. If you're experiencing concerning symptoms and want to better understand what might be causing them, try our free AI symptom checker and always reach out to a healthcare provider if cramps are severe, worsening, or if you have any concerns during pregnancy.