They also might be shorter or last longer than usual, or be lighter or heavier than normal. Your menstrual periods might stop for a month or a few months and then start again. In your 40s, as your body starts the transition to menopause, your cycles might become irregular.In your 20s and 30s, your cycles are usually regular and can last anywhere from 24 to 38 days.
If longer or irregular cycles last beyond that, see your doctor or nurse to rule out a health problem, such as polycystic ovary syndrome (PCOS). Girls usually get more regular cycles within three years of starting their periods. For a few years after your first period, menstrual cycles longer than 38 days are common.Often, periods are heavier when you are younger (in your teens) and usually get lighter in your 20s and 30s. Your cycles may change in different ways as you get older. During perimenopause, the transition to menopause, you may not ovulate every month.Women who are breastfeeding should talk to their doctor about birth control methods if they do not want to get pregnant. Women who are breastfeeding may or may not ovulate.4Īt different times in a woman’s life, ovulation may or may not happen:
A man’s sperm can live for 3 to 5 days in a woman’s reproductive organs, but a woman’s egg lives for just 12 to 24 hours after ovulation.Įach woman’s cycle length may be different, and the time between ovulation and when the next period starts can be anywhere from one week (7 days) to more than 2 weeks (19 days). A woman is most likely to get pregnant if she has sex without birth control in the three days before and up to the day of ovulation (since the sperm are already in place and ready to fertilize the egg as soon as it is released). Ovulation is when the ovary releases an egg so it can be fertilized by a sperm in order to make a baby.
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