Premenstrual depression: feeling low before your period
Premenstrual depression is low, hopeless or empty mood that appears in the week or two before your period and lifts within a few days of bleeding. It's linked to falling estrogen and progesterone in people sensitive to them. Mild sadness is common with PMS; severe, disruptive low mood every cycle may be PMDD, and it's very treatable.
What it can feel like
- A heavy, gray mood that settles in for days
- Feeling hopeless, worthless, or like a burden
- Losing interest in things you usually enjoy
- Crying easily, or feeling numb and flat
- Tiredness, sleeping more, or poor sleep
- Harsh self-talk that sounds convincing in the moment
- Then, often suddenly, feeling like yourself again a day or two into your period
That last point is the hallmark. Premenstrual depression has an off switch tied to your cycle. If low mood continues through your period and into the following weeks, something else may be going on too.
Why you feel depressed before your period
After ovulation you enter the luteal phase. Progesterone rises and estrogen has a second smaller bump, then both fall sharply in the last week. Estrogen supports serotonin and dopamine, and progesterone's by-product allopregnanolone acts on calming GABA receptors. In people whose brains react strongly to those shifts, the drop can trigger genuine depressive symptoms.
This isn't a hormone deficiency. Hormone levels are typically normal. NIH experiments showed it's the sensitivity to normal changes that differs. Stress, poor sleep, alcohol and a history of depression can all make that sensitivity show up more.
PMS, PMDD or PME?
| What it looks like | |
|---|---|
| PMS | Feeling down or teary before your period, but you keep functioning |
| PMDD | Severe depression, hopelessness or self-criticism every cycle, disrupting life, gone the week after your period. See PMDD |
| PME | Depression present all month that gets clearly worse before your period. See premenstrual exacerbation |
| Depression | Low mood that doesn't follow your cycle at all |
A review of studies found that around 60% of women with a mood disorder report premenstrual worsening, so PME is common and worth naming. Only daily ratings over at least two cycles can show which pattern fits.
What helps
Day to day
- See it coming. Knowing that day 24 is often hard makes it easier to treat it as a symptom, not a verdict on your life.
- Move your body. Aerobic exercise has good evidence for PMS and depression. A walk outside counts double: movement plus daylight.
- Protect sleep and keep a regular wake time.
- Stay connected. Low mood says hide; a short call or walk with a friend often helps more than it seems it will.
- Go easy on alcohol, which deepens low mood and disturbs sleep.
- Lower the bar. Plan easier days and postpone big decisions when you can.
Medical options
If low mood before your period affects your life, see a doctor. SSRIs are the first-line treatment for severe premenstrual mood symptoms and, unlike in ordinary depression, often work within days, so they can be taken just in the luteal phase. Other options include a combined pill with drospirenone and cognitive behavioral therapy. If you already take an antidepressant, ask about adjusting it before your period. See PMDD treatment.
With a one-tap mood check-in each day, Lulu shows how you usually feel on each cycle day and flags the stretch that tends to be heaviest. The PMS chart exports as a CSV for your doctor. Lulu doesn't diagnose; it helps you show what's happening.
When to get help
If you ever have thoughts of harming yourself, reach out now: call your local emergency number, or in the US call or text 988. In the UK and Ireland, Samaritans are on 116 123. See a doctor if low mood affects work or relationships, lasts beyond your period, or you feel hopeless. You don't have to wait for your period to pass.
Frequently asked questions
Is it normal to feel depressed before your period?
Feeling a bit low or teary is common. Feeling hopeless or unable to function every cycle isn't something to put up with: it may be PMDD and is treatable. See is it normal to feel sad before your period.
How long does premenstrual depression last?
Usually from a few days to two weeks before your period, easing within a few days of bleeding.
Can PMS cause depression?
PMS can cause depressive symptoms, and it can worsen existing depression. See can PMS cause depression.
Does birth control help premenstrual depression?
Some pills that stop ovulation, especially those with drospirenone, help some people. Others feel worse on hormonal contraception. See birth control and mood.
Sources
- Office on Women's Health: Premenstrual dysphoric disorder (PMDD)
- Kuehner C, Nayman S. Premenstrual exacerbations of mood disorders: findings and knowledge gaps. Curr Psychiatry Rep (2021)
- Marjoribanks J et al. Selective serotonin reuptake inhibitors for premenstrual syndrome. Cochrane Database Syst Rev (2013)
- NHS: PMS (premenstrual syndrome)
This page is for information only and isn鈥檛 medical advice. If something worries you, please talk to a doctor.
Keep reading
Luteal phase depression: why the second half of your cycle feels so heavyLuteal phase depression is low mood after ovulation that lifts with your period. What drives it, how it differs from PMDD and PME, and what helps.
PMDD: premenstrual dysphoric disorder, explained kindlyPMDD is a severe, cyclical mood condition tied to your period. What it is, why it happens, how it's diagnosed, what treatment helps, and where to get support.Premenstrual exacerbation (PME): when your cycle makes existing conditions worsePremenstrual exacerbation (PME) is when depression, anxiety, ADHD or another condition worsens before your period. How it differs from PMDD, and what helps.PMDD test: a self-check before you talk to a doctorFree PMDD test: check your premenstrual symptoms against the pattern doctors look for, then learn how a real PMDD diagnosis works and what to bring.Can PMS cause depression?Can PMS cause depression? It can cause depressed mood before your period, and PMDD can cause severe depression. How to tell them apart and get help.
Luteal phase mood: a kind survival guideWhy the luteal phase can bring anxiety, low mood, irritability and tears, when it usually starts, what actually helps, and when it might be PMDD.