Is it bad to have a three day period?

Answer 1

The length of your period is not important, as long as you are ovulating and have a long enough luteal phase. The length of the luteal phase (the time span after you ovulate and until menstruation begins) is critical to being able to get pregnant. A three day period is still considered within the normal range for normal menstruating women. If you have a much shorter period (1 day or less), then it would be a sign to check for other problems, such as non-ovulation and PCOS, since "breakthrough bleeding" is often a symptom of non-ovulation.