Phase lutéale cycle menstruel

Irritability, cravings and low energy: signs of the luteal phase

Written by: Camille Raynaud

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Time to read 9 min

You’re on day 17, your ovulation has just passed. The luteal phase then begins, bringing with it a range of potential minor and more significant symptoms called PMS, premenstrual syndromes. Just before your next period arrives (perfectly managed thanks to the best organic period panty 😉), you may experience physical or psychological states unfamiliar to you during the rest of the month; PMS is inherent to the luteal phase.


Do you get weird cravings? Feel more tired, worn out? No energy? Trouble concentrating? Feeling low? Overwhelmed, down, or more angry, irritable, stressed? These are premenstrual symptoms, or PMS. We explain everything!

The menstrual cycle, the basics

Remember, we had already discussed the luteal phase of the menstrual cycle together. We conducted a series of four articles on the menstrual cycle, dedicating an article to each phase of the female cycle:


Let’s place the luteal phase back into the menstrual cycle. The menstrual cycle is a cyclical process in the female body that repeats over and over again. This feminine cycle is hormonal; it is governed, triggered and sometimes disrupted by hormones.


Finally, this menstrual cycle is essential for reproduction. It begins when a girl goes through puberty, at the time of her first period, and ends at menopause.

phase lutéale

The menstrual cycle, the essentials

  • During the follicular phase, the uterus prepares everything to welcome the potential fertilized egg. Its lining thickens so the fertilized egg can implant properly. The endometrium then resembles a cozy, comfortable bed. In the ovaries, follicles grow aiming to reach maturity.

  • After about 15 days, ovulation occurs. A follicle reaches maturity and detaches from the ovary; its goal? To meet a sperm cell on its way for fertilization. This is the time in your cycle when you are most fertile and the chances of becoming pregnant are highest. The egg travels down the fallopian tube.

  • If you are on contraception, a virgin, or have not had sexual intercourse, the egg will not find viable sperm. No embryo will form. During the luteal phase, your whole body checks whether fertilization has occurred or not. Hormones are at their peak: progesterone (produced by the ruptured follicle, the corpus luteum) and estrogen. If no implantation occurs, if no embryo nests in the endometrium, the egg disintegrates, hormone levels (estrogen and progesterone) drop sharply, and a new period begins.

  • The cycle comes full circle and a new period arrives. These menstruations shed the uterine lining that formed during the previous cycle. To experience your period as calmly as possible, don’t hesitate to try Louloucup period underwear, the Loulou menstrual cup, or our period swimsuits. Don’t get caught off guard anymore: menstrual cycles can be tracked and periods anticipated. We’ll help you calculate your menstrual cycle to avoid unpleasant surprises. And if there’s one tip you should remember, it’s this: for a leak-free night with no stains on the sheets, heavy-flow period underwear or very heavy flow is absolutely essential. A real must-have in your period kit!

All about the luteal phase

The luteal phase lasts around fifteen days on average and, if you’ve been following along, sits between ovulation and your next period. This is really the point in your cycle when you’re likely to feel particularly sensitive because your hormone levels are very high and then suddenly drop.


If you suffer from more or less intense cramps during your period, in the luteal phase the symptoms can be more insidious and surprising. They vary widely. You may find yourself in physical and psychological states you don’t experience at other times.

The luteal phase takes place right after ovulation and usually lasts around 14 days in a 28‑day cycle. In most cases, this phase can last from 10 to 18 days depending on the length of the cycle.

The luteal phase can take two completely different paths, depending on whether fertilisation occurs or not:

  • that is, implantation of the fertilised egg in the uterine cavity, the first stage in the development of the embryo and therefore of a pregnancy,

  • either the breakdown of the unfertilized egg.

In both cases, it’s during the luteal phase that the endometrium, or uterine lining, thickens to welcome a fertilized egg for implantation.
If no implantation occurs, this process stops around day 20. The body understands that no fertilization has taken place. The cycle ends and the body then prepares to shed the lining that has built up. A new period then begins.

The luteal phase is also called the progestational phase.

Questions & answers about the luteal phase

✤ What exactly happens during the luteal phase?

As you’ve probably gathered, the female cycle is governed by hormones. They directly influence the behaviour of cells, the ovaries and also the uterus. Over an average 28‑day cycle in a woman with no particular issues, here’s exactly what happens during the luteal phase: 

  • The egg has been released from its follicle during ovulation and is waiting to be fertilised by a potential sperm. The ovarian follicle that ruptured now has an important role; it’s called the corpus luteum. It secretes a key hormone: progesterone.

  • Progesterone has a direct impact on the endometrium. It thickens to better welcome a fertilised egg.

  • The days go by. If no fertilisation occurs, the corpus luteum breaks down, causing hormone levels to drop and triggering a new period.

  • Conversely, if fertilisation does occur, the corpus luteum supports the proper implantation of the embryo.

✤ What is the corpus luteum?

The corpus luteum plays the leading role during the luteal phase. It’s simply the mature follicle you saw earlier in the follicular phase. It has matured and released a viable oocyte ready to be fertilised at ovulation. But the role of this little sac doesn’t stop there!

The Graafian follicle, once transformed into the corpus luteum, measures around 20 mm. It’s named after its yellow pigment, lutein. The corpus luteum creates a welcoming environment to ensure implantation is successful. Its role at the start of pregnancy is therefore essential.

At the very beginning of pregnancy, the corpus luteum does not break down and remains active near the embryo, secreting progesterone in particular. It does not self-destruct thanks to the action of human chorionic gonadotropin. This hormone is produced by the embryo.

Sometimes, the corpus luteum does not regress as expected and may even grow. Gynecologists then refer to a corpus luteum cyst. This is usually eliminated in the following cycle and everything returns to normal.

✤ What does the term luteal insufficiency mean?

Luteal insufficiency, or a short luteal phase, occurs when the menstrual cycle is short or too short. In a cycle that is too short (less than 28 days), the level of progesterone needed for proper implantation of the fertilised egg in the endometrium is not reached. The chances of becoming pregnant are therefore lower. The uterus is not sufficiently prepared or receptive.

Also, when progesterone levels are too low, the risk of miscarriage increases.
Progesterone creams or taking vitamin C are a few options that may help lengthen the luteal phase. It’s always best to discuss this with your doctor.

✤ What factors can disrupt the luteal phase?

The luteal phase can be disrupted by external factors such as stress, diet, exercise or sleep. Hypothyroidism or PCOS can also be very likely causes. Finally, be aware that after age 35, female fertility declines.

Menstrual cycle, luteal phase and PMS

🌸 Cravings, irritability, fatigue: all the different symptoms of the luteal phase

Really strange food cravings (especially for sweets), low moods, a clear lack of energy—the luteal phase is not the easiest to get through.

A great many women experience PMS at some point in their lives. Over 150 symptoms have been identified so far. They can be physical or psychological. Their intensity varies a lot and they don’t necessarily appear every month.

🌸 Physical symptoms

Major symptoms include bloating, disrupted digestion, water retention, breast tenderness, headaches and even acne.

Some women also experience eating disturbances (cravings or unexplained hunger), as well as varying levels of fatigue or even dizziness. Hypersensitivity (to light, noise), hot flushes and abdominal cramps round out this long list.

🌸 Psychological symptoms

Stress, irritability, anger, aggression and impatience can be amplified in some women during the luteal phase. Lethargy, apathy, feeling low, lack of drive and motivation, as well as negativity, sadness and depressive feelings can also appear, even though your mood was great just a few days earlier!

Confusion and feeling useless, not good enough, or overwhelmed. Lack of concentration, brain fog, a very changeable libido, or even insomnia are also premenstrual symptoms.

🌸 Why do I feel like eating?

It's simply the rise in progesterone at the beginning of the luteal phase that makes you crave more sugar, among other things. Hence your irresistible cravings for chocolate, cookies, cakes, and other not-so-light or healthy treats. Progesterone is a hormone produced by the corpus luteum. The corpus luteum is the follicle that ruptured in the uterus after ovulation.

🌸 Why am I so irritable?

During the second part of the luteal phase, hormone levels drop. This leads to more unstable moods and emotions. You may feel on edge, more irritable, more stressed and more hypersensitive.

🌸 Why am I sluggish, low on energy and so tired?

The gradual drop in estrogen levels (the other main ovarian hormone in the menstrual cycle along with progesterone) in the second half of the cycle explains your fatigue and lack of energy, which can really interfere with your daily life.

Some tips for getting through your luteal phase more comfortably

Through diet, lifestyle, exercise, rest, and even natural or more specific treatments, solutions exist to cope with PMS. Don't endure this stress, anger, or irritability alone.

Here are a few ideas:


  • Avoid salt, refined sugar, alcohol and stimulating drinks, and prioritise vegetables, water and dairy products. Cook at home and avoid processed foods.

  • Let off steam with a sport or physical activity you enjoy. The goal is to move, engage your body and muscles, and release endorphins. This isn’t about performance, just about feeling good.

  • Listen to yourself. Listen to your body and your own limits—and accept them. Take time to breathe, meditate, relax and reconnect with yourself. Try sophrology sessions to release stress. Learn to know yourself and put things into perspective. Take a bath, do a craft or creative activity to focus on something positive.

  • Set up, with the help of healthcare professionals, courses of vitamins, food supplements or other options that can target specific symptoms.

Our selection of must‑haves for calm, confident periods 🥰

FAQ – Luteal phase and symptoms

What are the signs of the luteal phase?

In the luteal phase, your mood can be more up and down, you might feel more sensitive, more tired, and you may also have specific food cravings. Symptoms vary a lot from one woman to another and from one cycle to the next.

How long does the luteal phase last?

Around 14 days if the egg is not fertilised. The luteal phase is in the second half of the cycle, between ovulation and the start of the next period.

Can I get pregnant during the luteal phase?

You can get pregnant in the two days after you ovulate, so during the luteal phase. We recommend using contraception throughout your entire cycle because shifts or late ovulation can definitely happen.

Louloucup

Camille

I’ve been writing for Louloucup for several years now, and I love chatting about everything from period panties to grandma’s remedies for easing period pain! Every week I share my favorites and inspirations with one goal in mind: finally experiencing calm, stress-free periods! 🩷

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