Under normal circumstances, during preterm labor, there may first be regular uterine contractions accompanied by continuous cervical dilation. This situation should be considered a possible onset of preterm labor. Generally, the period from after 28 weeks to before 37 weeks of gestation is considered the possible range for preterm labor to occur. Therefore, if there are symptoms like regular abdominal pain, backache, or a feeling of heaviness, it is necessary to seek medical attention promptly. When needed, local physical therapy, symptomatic treatment, or administration of medications to sustain the pregnancy can effectively alleviate the symptoms.