Normally abour 1 month apart, but if you are just starting your period and its not a month apart, don't worry. Normally the first about 5 months it skips around a lot, but trust me, it will mellow out soon enough
Actully, I've had my period for 2 years, it's still not too regular but its at 16-18 days aprt. is that normal? (same person who asked the origonal question)
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