Can your period date change every month

While your middle school sex education might have taught you that a period comes every 28 days, you’ve likely noticed that periods vary widely from person to person — and they can vary quite a bit for each individual person as well.

With all this variation, how do you know if your period is “abnormal” — and potentially signaling that something is wrong?

Having atypical periods is known as abnormal uterine bleeding, or AUB.

What exactly constitutes “normal” and “abnormal” has long been confusing, even for health care providers. Adding to the confusion, the terminology for AUB historically included complex words like “menorrhagia” (heavy bleeding) and “oligomenorrhea” (infrequent periods).

The International Federation of Gynecology and Obstetrics (FIGO) has established criteria to help more clearly determine what qualifies as AUB.

These updated definitions of normal and abnormal uterine bleeding are much more user-friendly than what were available in the past. Hopefully, these clarifications make it much easier f

how many days should your periods be apart

how far apart should your cycle be