Use of Plan B can cause some menstrual irregularities, but they generally only last a month or so. First, take a pregnancy test to rule out pregnancy. Other common causes of missed or irregular periods include:
- Excessive weight loss or gain.
- Eating disorders, such as anorexia or bulimia. If you have an eating disorder, get professional help immediately.
- Increased exercise.
- Emotional stress.
- Illness.
- Travel.
- Certain medications.
- Hormone problems. This may cause a change in the levels of the hormones that the body needs to support menstruation.
- Age. Women in perimenopause often experience irregular periods.
If you normally have regular monthly periods, you should be evaluated by a medical professional to determine why your periods have become so irregular.
8. February 2012
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