Period a week early: is there anything to worry about?
You've used Flo's period calculator to predict when your next period will arrive, but then: Surprise! You start bleeding days before it's expected. What's the deal?
If your period comes early once in a while, it is likely normal and not a cause for concern. Menstruation might start early because of a change in your lifestyle, intense physical exercise, illness, or stress. However, sometimes it happens with no reason, and this is still not necessarily abnormal. So, if you get your period a week early, try not to worry. If your period is consistently irregular, you can let your health care provider know to rule out any problems.