Question: how long do menstrual cycles last?
Answer: For most women this happens every 28 days or so, but it's common for periods to be more or less frequent than this, ranging from day 21 to day 40 of their menstrual cycle. Your period can last between 3 and 8 days, but it will usually last for about 5 days. The bleeding tends to be heaviest in the first 2 days.