Contractions without pain are mostly seen in physiological contractions, manifested as irregular, painless, transient contractions of the uterus, pregnant women generally do not feel abdominal pain. This is a common physiological phenomenon during pregnancy, no need to worry too much, regular observation can be, generally do not need special treatment. Physiological contractions, also known as false contractions and ineffective contractions, can occur from 12 to 14 weeks of pregnancy, but they will occur more frequently in the middle and late stages of pregnancy. Physiological contractions are characterized by sparse, asymmetric and irregular contractions, short duration, mostly transient, longer intervals, less pressure in the uterine cavity during contractions, no dilatation of the cervical os, and most of them do not cause pain, and some pregnant women may feel a sense of tightness in the abdomen. With the development of pregnancy, the number of contractions will also increase. However, it is important to note that near full term, irregular uterine contractions, accompanied by a small amount of vaginal bleeding, or redness, often occur just before labor, a condition we call preterm labor. The uterine contractions of preterm labor sometimes have the same sensation as menstrual cramps. Some pain-insensitive pregnant women or those with impaired nociceptive nerves may not feel any pain, so some pregnant women may experience no pain during contractions, which is caused by physical differences. However, when the contraction interval is shortened, the intensity will also be enhanced, generally 5 minutes interval, lasting 25-30 seconds, pregnant women will have obvious pain, especially in full-term labor, this time belongs to the true contraction, should be timely medical treatment. If the contractions are only physiological, you can try to change the posture, appropriate activities, relax the body, but also can carry out deep, long and slow breathing to ease the discomfort.