It is not uncommon for a woman's menstrual cycle
to vary from month to month, or skip a month entirely.
Stressors can cause your body to skip a cycle, such as severe illness, extreme exercise
regimens, being radically underweight
(i.e. Anorexia nervosa
), or high amounts of emotional stress
. If you are concerned, see an ob/gyn doctor who can run tests and check for any problems.
Answer assisted by Cole Livingston, Medical Student