PMS and Mood Changes: Why You Feel Different Before Your Period

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Pinkishe Foundation

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31/10/2026

Dr. Shehla Jamal

PMS and Mood Changes: Why You Feel Different Before Your Period

Why your mood changes before your period

Most girls and women notice some changes in the days before a period. You may feel more irritable, teary, anxious or tired. You may crave certain foods, feel bloated or have sore breasts.

For many, these changes are mild. For a smaller group, they are strong enough to get in the way of school, college, work or family life. When that happens in most cycles, doctors call it premenstrual syndrome, or PMS.

These feelings are real. They are not drama, and they are not in your head. There is a lot you can do to feel better, and help is available.

What is PMS?

PMS is a group of changes in mood, body and behaviour that:

  • start in the days before your period, in the second half of the cycle after ovulation,
  • ease within a few days after your period starts, and
  • come back in most cycles.

The timing is the key sign. If the same feelings stay with you all month, something else may be going on, and it is worth seeing a doctor.

What causes PMS?

After ovulation, the hormones oestrogen and progesterone rise and then fall before your period. This rise and fall happens in everyone who has periods. Girls and women with PMS usually have normal hormone levels.

Doctors now think that in some people the brain is more sensitive to this normal rise and fall. Serotonin, a brain chemical that helps control mood, sleep and appetite, plays a part. That is why PMS can affect mood so strongly.

Stress, poor sleep and other worries are not the root cause of PMS, but they can make it feel worse.

A small grey cloud gives way to sunshine over a calm sea.

Common signs of PMS

Mood

  • Irritability or anger
  • Feeling low, sad or teary
  • Feeling anxious or tense
  • Mood swings

Body

  • Bloating
  • Sore or swollen breasts
  • Headache or body aches
  • Tiredness
  • Pimples

Behaviour

  • Food cravings
  • Sleeping too much or too little
  • Trouble concentrating
  • Wanting to be left alone

What is PMDD?

For a small number of girls and women, the mood changes before a period are severe. They may feel deep sadness or hopelessness, strong anger, panic, or lose interest in everything, and then feel better soon after the period starts. This is called premenstrual dysphoric disorder, or PMDD.

PMDD is a real medical condition. It is not a weakness and it is not your fault. It can be treated, so please see a doctor if this sounds like you.

If you ever feel hopeless or have thoughts of harming yourself, please talk to someone today. Call Tele-MANAS, the government's free mental health helpline, on 14416 or 1-800-891-4416, at any hour. In an emergency, call 112.

Ways to cope with PMS mood changes

Track your symptoms

For two or three cycles, write down how you feel each day and the day your period starts. You will start to see a pattern. It helps you plan ahead, and it helps a doctor understand what is going on. Our period and ovulation calculator can help you know when your next period is due.

Eat regular, balanced meals

Small, regular meals can help with cravings and mood dips. Choose whole grains like roti, brown rice, ragi or oats, with dal, chana and vegetables. Include foods with calcium, such as milk, curd, paneer, ragi and til. Go easy on salt, which can add to bloating, and on sweets.

Cut down on caffeine and alcohol, and do not smoke

Too much tea, coffee or cola can make anxiety and sleep worse. Alcohol can make low mood worse. Smoking is linked with worse PMS.

Move your body

A brisk walk of about 30 minutes on most days, dancing, cycling or yoga can lift your mood and ease bloating and aches.

Sleep well

Try to sleep and wake at the same time each day, even in the days before your period. Poor sleep makes irritability and low mood harder to handle.

Find ways to relax

Deep breathing, meditation, prayer, music or time outdoors can calm a busy mind. Pick what works for you.

Talk to someone

Tell someone you trust, such as a parent, sister, friend, teacher or partner, how you feel and what helps. Counselling can help too. A type of talking therapy called cognitive behavioural therapy (CBT) has been shown to help with PMS and PMDD.

Plan ahead

If you know which days are hard for you, try to keep them lighter. Move a tough task or a big decision to another day if you can.

Treatment from a doctor

If your symptoms are strong, do not just wait them out. A doctor can help, and treatment helps most people feel better.

  • A doctor may first check for other causes that can look like PMS, such as thyroid problems, anaemia, depression or anxiety.
  • Some medicines that act on serotonin can ease the mood symptoms of PMS and PMDD.
  • Some birth control pills can ease PMS and PMDD. Ask your doctor whether one is right for you.
  • For cramps, headache or aches, ask a doctor or pharmacist which painkiller is right for you.
  • Counselling, such as CBT, can be used alone or with other treatment.

Herbal remedies and supplements have not been proven to treat PMS. Please speak to a doctor before you try any.

For family and friends

If someone you love has PMS, your support makes a real difference.

  • Listen without judging.
  • Do not make jokes about "that time of the month". It hurts more than it helps.
  • Offer practical help on hard days, like taking on a chore.
  • If her symptoms are severe, encourage her to see a doctor, and offer to go along.

When to see a doctor

  • Your mood changes get in the way of your studies, work or relationships.
  • You feel hopeless or deeply sad, or have thoughts of harming yourself. Call Tele-MANAS on 14416 today, or 112 in an emergency.
  • Your symptoms carry on after your period ends, or are there all month.
  • Self-care has not helped after two or three cycles.
  • You have panic attacks or anger you cannot control.
  • Your periods are very painful, last longer than 7 days, or you soak a pad every hour or two.

Have a question about PMS and your mood? Call our menstrual helpline on 85888 70999. It answers at any hour.

Get the free three month period tracker

A simple printable sheet that marks your period days, your fertile window and your ovulation day. We will email it to you now.

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We will send the tracker and a few gentle menstrual health emails from Khyati at Pinkishe. No spam, unsubscribe any time.

Prefer to work out your dates now? Open the free ovulation calculator

FAQs

What is PMS?

PMS, or premenstrual syndrome, is a group of changes in mood, body and behaviour that come in the days before a period and ease soon after it starts. It comes back in most cycles.

How common is PMS?

Most girls and women notice some changes before a period. For a smaller group, the changes are strong enough to affect daily life, and doctors call this PMS.

Is it normal to cry or feel angry before my period?

Yes, many girls and women feel more teary or irritable before a period. If these feelings are very strong, or are there all month, see a doctor.

What is the difference between PMS and PMDD?

PMDD is a severe form of PMS. The mood changes, such as deep sadness, hopelessness, anger or panic, are strong enough to seriously affect daily life. PMDD can be treated, so please see a doctor.

Can food and exercise help PMS?

Yes, for many people. Regular balanced meals, less salt, sugar and caffeine, regular exercise and good sleep can ease symptoms. If they are not enough, a doctor can help.

When should I see a doctor for PMS?

See a doctor if your symptoms affect your studies, work or relationships, if self-care has not helped after two or three cycles, or if you ever feel hopeless. For thoughts of self-harm, call Tele-MANAS on 14416 today.

In short

Mood changes before a period are common and real. Tracking your symptoms, eating well, moving and sleeping well help many girls and women. If your symptoms are strong, see a doctor: PMS and PMDD can be treated.

About Pinkishe Foundation

Pinkishe Foundation is a specialist implementation organisation for menstrual health. We deliver, reliably, in schools and communities across India. Support our work with a donation.

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