Absence of contraction intervals means that the pregnant woman has no contraction intervals by the due date. An important feature of labor is the presence of regular uterine contractions, i.e. contractions. Contractions: Uterine contractions (i.e. contractions), which start irregularly and are weak in intensity, gradually become regular, stronger and stronger, with longer duration and shorter intervals, such as intervals of 2mdash;3 minutes, lasting 50mdash;60 seconds. So, how do pregnant women diagnose the presence or absence of intermittent contractions? The following is a brief introduction to the diagnosis: 1, the uterus regular contraction paroxysms, at least once in 10 minutes, and lasts for more than 30 seconds. 2.Vaginal bleeding or water breaking. 3.Lower abdominal pain or lower back pain, a feeling of backache, a feeling of bowel movement, a feeling of falling. By the due date, only contractions with pain are the precursors of labor. A few weeks before delivery, the uterine muscles are more sensitive and irregular contractions will occur that are short in duration and weak or limited to the lower part of the uterus. After a few hours, they stop and cannot open the cervix of the uterus, so they are not in labor and are called false contractions. The contractions of the uterus in labor are regular. At the beginning, the interval is about once every 10 minutes, and the pregnant woman feels abdominal pain, then the duration of the pain gradually lengthens to 40~60 seconds. The degree also increases and the interval time is shortened to about 3~5 minutes. When abdominal pain occurs with uterine contractions, the lower abdomen may feel very hard. The contractions are directly related to the amount of activity of the pregnant woman. As the pregnancy progresses and the fetus becomes bigger, the body burden of the pregnant woman becomes heavier and the uterus becomes more sensitive than usual, and the slightest stimulation can cause the abdomen to become hard. Most of the contractions are physiological, if the frequency is within the normal range, there is no problem, but too many times, more than an hour. If you don’t see relief, you should start your daily life to prevent contractions.