Sabine answered Tuesday May 8 2007, 7:09 pm: 28 days is only the average. Normal is anywhere from 21 to 35 days. It does matter how old you are, how long you've had your period, how many children you've given birth to, your health history, your medications, and how heavy the bleeding is.
christina answered Tuesday May 8 2007, 5:09 pm: Every 28 days.
If you're just starting your period, it'll be irregular for the first couple of years. You won't get it every 28 days as so. You'll have it one month and then skip for three. Once you've had it for a few years, it'll regulate itself out.
Attention: NOTHING on this site may be reproduced in any fashion whatsoever without explicit consent (in writing) of the owner of said material, unless otherwise stated on the page where the content originated. Search engines are free to index and cache our content. Users who post their account names or personal information in their questions have no expectation of privacy beyond that point for anything they disclose. Questions are otherwise considered anonymous to the general public.