Luteal phase: how long it lasts, symptoms and PMS

In short: the luteal phase starts after ovulation and ends when your next period begins. It usually lasts 12 to 14 days, and anywhere from 10 to 17 days is considered normal. Progesterone rises, then falls if there's no pregnancy, and that fall brings on your period. PMS, if you get it, shows up in this phase.

In Periodiva, this is your Slow phase.

What's happening in your body

After the egg is released, the empty follicle turns into the corpus luteum, a small, temporary gland in your ovary. It makes progesterone and some estrogen (Cleveland Clinic).

Progesterone keeps the womb lining thick and nourishing in case a fertilised egg arrives, and it thickens cervical mucus. It also nudges your body temperature up slightly, which is why basal body temperature stays a little higher until your period (Cleveland Clinic).

If there's no pregnancy, the corpus luteum breaks down after about two weeks. Progesterone and estrogen fall, the lining sheds, and your period starts a new cycle (Cleveland Clinic).

How long is the luteal phase?

On average, 12 to 14 days, with 10 to 17 days considered normal (Cleveland Clinic). In a study of more than 600,000 cycles, the average was 12.4 days (Bull et al., 2019).

It's much steadier than the follicular phase, which is why ovulation is easier to estimate by counting back from your next period than forward from your last one.

• A short luteal phase, under 10 days, can mean the womb lining doesn't build up enough to support a pregnancy, and may make getting pregnant harder.
• A long luteal phase, 18 days or more after ovulation without a period, can point to a hormone imbalance such as PCOS, or to pregnancy.

You'd only know your luteal phase length if you track ovulation, for example with temperature or ovulation tests.

PMS: why the days before your period can feel hard

Premenstrual syndrome (PMS) is a set of symptoms that can turn up in the weeks before your period (NHS). Common ones include:

• mood swings, irritability, feeling low or anxious
• tiredness or trouble sleeping
• bloating, tummy cramps and tender breasts
• headaches, spots and greasy hair
• changes in appetite, and cravings

Symptoms vary from person to person and from month to month. None of it means something is wrong with you. It's hormones, on schedule.

When it's more than PMS

Premenstrual dysphoric disorder (PMDD) is a more severe form, where symptoms like anxiety, anger or depression are much more intense and get in the way of daily life (NHS). If that sounds like you, please see a doctor. It's real, and it's treatable.

If you ever feel like harming yourself, get help right away: contact your local emergency number, or in India, call the Tele-MANAS mental health helpline on 14416.

Care that helps

The NHS suggests these to ease PMS (NHS):

• Move regularly. Gentle or steady exercise counts.
• Eat a balanced diet, perhaps as smaller, more frequent meals if you feel bloated or snacky.
• Protect your sleep.
• Lower stress with things like yoga, meditation or a walk outside.
• Painkillers such as ibuprofen or paracetamol for cramps and headaches.
• Keep a symptom diary for at least two cycles, so you can see your pattern and plan around it.
• Go easy on alcohol, and avoid smoking.

And be kind to yourself. A softer plan in your Slow phase isn't falling behind; it's working with your body.

When to talk to a doctor

• PMS affects your daily life, or lifestyle changes haven't helped.
• You think you might have PMDD.
• You're trying to get pregnant and your period often arrives less than 10 days after ovulation.

Plan for your next period

Our free period calculator estimates when your next period will start, so you can see your luteal days coming. It runs on your device and saves nothing.

Next: back to the start, with the menstrual phase. Or read the overview: the four phases of your cycle.