Cycle tracker
How hormones change across your period
Hormones rise and fall across your menstrual cycle, affecting how you feel, think, and function. A cycle and symptom tracker like CHARLI helps you make sense of these changes so you can work with your body, not against it.
Menstrual cycle and hormones
What happens during your menstrual cycle
The menstrual cycle is a complex, hormone-driven process that typically recurs every few weeks. It starts on the first day of bleeding and ends the day before your next period begins.
We all tend to focus on the period itself, but that’s just the tip of the iceberg. The system involves many shifts over the month and the four hormones, oestrogen, progesterone, FSH, and LH, are the key players running the show.
These hormones tend to fluctuate in fairly consistent patterns, though everyone’s timing can differ. They essentially tell your body when to release an egg, when to get ready for a pregnancy, or when to restart everything. By tracking changes over a few months, you may start to notice your body’s own rhythm. It’s this mapping that makes a cycle tracker so helpful. It may help you spot patterns that reflect how you’re feeling over time.
The four hormonal phases
Menstrual phase: the reset
This phase begins on the first day of bleeding. It typically goes for 3 to 7 days. At this point, both oestrogen and progesterone are really low.This drop is what causes the uterine lining to shed. You might notice you feel more tired or a little emotional. This happens because your body needs that extra energy to start again.
What’s happening hormonally:
- Oestrogen and progesterone fall sharply.
- FSH begins to rise a little, getting new follicles ready in the ovaries.
Things you might notice:
- Lower energy and drive.
- Feeling more sensitive to pain or cold.
- Wanting certain foods or having mild bloating.
This phase may be a good time to ease up, rest more and pay extra attention to how you feel. Recording how you feel in your cycle tracker will help you see trends. For example, if cramps or tiredness happen every month, or just sometimes.
Follicular phase: energy and optimism return
The follicular phase starts once the bleeding stops. It usually runs from Day 7 to Day 14. Oestrogen levels go up constantly. This encourages tiny new follicles, each one holding an egg, to start growing. This rise in oestrogen lifts your mood and sharpens your focus. It can feel like a really noticeable change. You’ll probably hit your peak productivity, and you might find yourself wanting to socialize more.
What’s happening hormonally:
- Oestrogen increases quickly.
- LH and FSH help the egg develop.
- Progesterone stays low.
Things you might notice:
- A brighter mood and clearer thoughts.
- More drive and better concentration.
- Clearer skin and improved sleep.
A cycle tracker may help you notice when your energy tends to rise or dip. You might notice stronger workouts, much clearer thinking, or just a fantastic sense of balance overall.
Ovulation: your hormonal high point
Most of the time, ovulation happens right in the middle of your cycle. It’s triggered by a sudden, sharp spike in LH, which allows that fully developed egg to leave the ovary. Right before ovulation, oestrogen is at its peak; then, progesterone immediately starts climbing up.
What’s happening hormonally:
- LH surges to release the egg.
- Oestrogen peaks, then drops a little.
- Progesterone begins to go up.
Things you might notice:
- A clear lift in your sex drive.
- More energy or feeling very alert.
- Clear, stretchy cervical mucus.
- A small jump in your body temperature.
Ovulation is also the time when you are most able to get pregnant. If you are tracking for conception or contraception, your cycle tracker can help mark this specific window by putting together details like temperature, symptoms, and changes in discharge. It’s best to do this alongside professional guidance from a GP or fertility specialist.
Luteal phase: winding down
Once ovulation is over, the luteal phase starts; this lasts for about two weeks. Progesterone takes charge here, helping the uterine lining get ready in case you become pregnant. If fertilisation doesn’t happen, both progesterone and oestrogen fall quickly, which then brings on your next period.
What’s happening hormonally:
- Progesterone is the main hormone.
- Oestrogen goes up a little, then drops.
- Your body temperature stays slightly higher than usual.
Things you might notice:
- Tender breasts or bloating.
- Mood changes or feeling irritable.
- Difficulty sleeping.
- Wanting carbs or sugar.
Lots of people have PMS (premenstrual syndrome) during this phase. Logging your symptoms in your cycle tracker will let you see if these patterns are the same each month or getting worse; this information can be helpful when you talk to a GP (Doctor).
Changes during your period
Why hormones affect more than your period
Your hormones don’t just control reproduction; they influence nearly every system in your body. Oestrogen supports heart health and brain function. Progesterone helps with sleep and calmness. When either hormone is out of balance, symptoms like fatigue, anxiety, or skin breakouts can appear.
Using a cycle tracker helps you understand these changes. You might notice your mood dips mid-cycle or that you crave certain foods before your period. Recognising these shifts means you can plan ahead, including scheduling rest, exercise, or important tasks when your body feels best.
Over time, this kind of tracking creates a fuller picture of your health. If symptoms start to change, you’ll have detailed notes to share with a health provider.
Cycle tracker app
Using a cycle tracker to understand hormone changes
A cycle tracker is much more than a digital calendar; it’s a personal health tool. Apps like CHARLI let you record your symptoms, flow, mood, and sleep every day. If you do this regularly, you’ll soon start to notice how your hormones actually affect your daily life.
What tracking helps you do:
- Match physical feelings to different hormonal phases.
- See exactly when your period is likely to turn up.
- Notice how stress or changes to your routine shift your cycle.
- Quickly notice if your hormones might be out of balance.
If your cycle suddenly shortens, for example, or you notice new PMS symptoms, the data on your cycle tracker helps you quickly work out the cause. You’ll find this information incredibly helpful when talking things through with your Dr (GP) or specialist.
Supporting your hormones naturally
Hormonal health doesn’t have to be perfect. It’s simply about tuning into your body’s natural rhythm. Supporting your hormones across the month is easier than you think. Try these simple steps:
- During menstruation, make sure you prioritize rest. You’ll find that things like gentle stretching, a warm heat pack, and staying well-hydrated really help settle down those cramps.
- For the follicular phase, try fuelling up with nutrient-packed foods. Think of things like leafy greens and lean protein as they really help support your rising oestrogen.
- For balancing mid-cycle energy, remember that ovulation can bring high energy. That makes it a perfect time for social plans or workouts.
- To deal with that luteal phase tension, magnesium and some complex carbs are helpful. Consistent sleep is also important. Seriously, though, make sure you look after yourself.
Over time, your cycle tracker may highlight which patterns suit your body best.
When to seek medical advice
Hormonal changes are normal, but if your symptoms become sudden or extreme, you should get them checked. If any of these sound familiar, book an appointment with a GP to discuss them:
- Very heavy or painful periods like the ones that stop you in your tracks.
- Long gaps between cycles
- Serious mood swings or extreme tiredness.
- Symptoms like acne or changes to your hair that suggest your hormones are out of balance.
Having a record in your cycle tracker gives your Dr much more information about your symptoms. They might suggest blood tests or talk about ways to help regulate your hormones.
CHARLI period tracking app
How CHARLI helps you track hormones
CHARLI is an Australian-made cycle tracker. It was put together by gynaecologists and fertility specialists. It helps you:
- Easily record your cycle phases and symptoms, and over time you may notice when your body benefits from extra rest or care.
- Gain a clearer view of your hormone patterns as you track over time.
- You’ll know if you need more rest or support.
- Connect with GPs through Telehealth right inside the app.
You can start by visiting charli.health to track your cycle and see how your hormones shift all month long. CHARLI takes complicated hormone data and makes it into information that’s clear and easy to read.
Honestly, when you understand your hormones, you just understand yourself better.
