Mood swings before my period
One week you feel steady. The next, small things set you off. You might snap at someone, cry at an advert, then feel flat an hour later.
Many people notice this in the days before a period. The mood often shifts again once bleeding starts. This pattern is part of what is called PMS.
The cause is not fully known. Changes in hormones after an egg is released seem to play a part. Broken sleep, stress, and missed meals can make the ups and downs feel bigger.
When to see someone
See a doctor if your mood goes dark, not just up and down. Get help the same day for thoughts of harming yourself, or anger that scares you or others. Book a visit if the low mood never lifts after your period, if you miss work or school each month, or if this began after you started new birth control.
Below is a list of remedies people have used for PMS. Each one has a grade that shows how much research has been done on it, from strong to very little. A grade is not a promise about you, so treat the list as notes to bring to your doctor.



