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when is your menstrual period due?

after your last period is due when is your next due is it 28 days after the 1st day of your last one or the last day?
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replied December 2nd, 2009
It is different for different women. Some women have a 28 day cycle. I have a 32 day cycle. The best way to figure out when to expect your period is by charting it for a few months. Count the days from the first day of your period one month to the first day of your period for the second month, and so on. If your period is regular, you should see a pattern. This will give you some idea of how long your cycle is and you can estimate when your next period will come and when you are ovulating/ fertile.
"Although the average cycle is 28 days, it is perfectly normal to have a cycle that is as short as 21 days or as long as 35 days. For a teen, a normal cycle can last up to 45 days." -cycle-topic-overview
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