One minute she is fine and the next she is yelling at you or crying about nothing. Are these mood swings being caused by PMS (Premenstrual Syndrome)?
PMS strikes about 7 to 14 days prior to your menstrual cycle (period) beginning. Normally symptoms will cease once your period has started. Not all women will experience all symptoms of PMS. Some women may only experience slight symptoms. Other women may experience severe depression and mood swings. Discomfort before your period is a pretty normal thing.
If you find that you are having trouble functioning at work or school you may want to consult your physician. There are a wide variety of over the counter drugs available to help alleviate some of the symptoms associated with PMS.
You may want to consider eating a more healthy diet or beginning an exercise regimen. Meditation can be an effective method of dealing with your emotions. If you find that these methods are not working for you then perhaps your doctor can prescribe another medication.
There are many studies that suggest a problem with hormonal imbalance can lead to more severe bouts with PMS. Have your doctor check your hormone levels and make sure they are normal. There are also some birth control pills available that claim to help with PMS. Do a search online and look at all your options. PMS is no fun but there are ways to treat it so that it will not be quite as bad.