A 17-year-old female asked:
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my period always comes two or three days before it's supposed to come, is this normal?

1 doctor answer
Dr. Matthew Wilson
13 years experience Obstetrics and Gynecology
Cycle length: Most people's cycle length will be between 25 and 35 days from the start of one period to the next. Many people erroneously think it should start on the same date of each calendar month, but as you learned in 1st grade, not all months are the same length. If your cycle length is in the above range, you are normal.
Answered on May 19, 2013

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A 21-year-old member asked:
Dr. Robert Phillips
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Yes: It is very common to have some odd and irregular periods in the first few packs of bcp's.
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A female asked:
Dr. Parul Krishnamurthy
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Can happen: 26- 35 day cycle is considered normal.
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