[ Answer this question ] Want to answer more questions in the Health & Fitness category? Maybe give some free advice about: Health? elizabethkate answered Sunday June 20 2010, 9:33 pm: Yes, participating in any athletics can cause your period to be abnormal.
As a teenager, most girls periods are not a perfect 28 days because of exercising a lot (usually in sports). Also, because you are young and new to having a period.
There is nothing wrong or unhealthy with having a period that isn't always 28 day spaced. Anywhere between about 22-32 days is healthy. However, if your periods are much closer or farther apart than that, it could mean you have a problem and you should see a doctor. There are medications that many young girls take to help regulate their periods.
If your period is more than 35 days late and you have been sexually active, you could be pregnant. If so, take a home pregnancy test with the help of a trusted friend or parent.
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