The time it takes to go from irregular to regular contractions cannot be generalized because irregular contractions can occur at any time of pregnancy, while regular contractions mostly occur just before delivery, and there are differences between primiparous and transitional mothers. Near the due date, it may take 1-2 days to go from irregular contractions to regular contractions in menstruating mothers and about a week in primiparous mothers. Pregnant women nearing full term need to be prepared to be admitted to the hospital for delivery if they have irregular contractions. Usually, some pregnant women also experience mild irregular contractions at around 14 weeks of pregnancy, which usually do not cause pain and are not of substantial significance. In addition, the main difference between irregular contractions and regular contractions is that irregular contractions are short in duration and long in interval; regular contractions are 40-60 seconds in duration and 2-3 minutes in interval, and when regular contractions occur, it usually indicates that labor is about to start.