The contractions when your baby is about to be born are true contractions, which are different from the usual false contractions. Usually, when there is a false contraction, the stomach is tight and hard, and there is no pain. But when the baby is about to be born, the real contractions have a tight, hard stomach and are accompanied by pain. These contractions are relatively regular, and in the early stage, the pain is relatively short, with a long interval of about half an hour and lasts for about ten seconds. However, as the labor progresses, the duration of pain gradually increases and the interval time gradually decreases. In general, the first stage of labor should be completed in 10-13 hours for first-time mothers, and when the first stage of labor is almost over, the contractions will last longer, about 1 minute. The intervals will be shorter, around half a minute or one minute.