The Hormones Behind Your Cycle (And Why Progesterone Deserves the Spotlight)
If you have ever felt like your body was speaking a language you were never taught, this post is for you. Hormones are chemical messengers. They travel through your bloodstream carrying instructions from one part of your body to another, telling your cells what to do and when to do it. You have hormones for digestion, for sleep, for growth, for mood. And you have a whole cast of hormones dedicated to your menstrual cycle, working in a rhythm that is meant to feel like a rise and fall, not a straight line.
Understanding these hormones is not about memorizing a chart. It is about building a relationship with your body. This is the Soften step in my coaching, cycle literacy, learning to read what your body has been trying to tell you all along.
Meet the Cast
FSH (follicle-stimulating hormone) is the opening act. It rises at the start of your cycle, right around your period, and its job is to signal your ovaries to begin developing a follicle for this cycle's egg.
Estrogen rises through the follicular phase, the stretch of days from your period until ovulation. As the follicle matures, it produces more and more estrogen, and this is what builds that rising, expansive, springtime energy so many women feel in the days before ovulation. Estrogen peaks right before ovulation, then dips sharply.
LH (luteinizing hormone) is the trigger. When estrogen peaks, it signals a surge of LH, and that surge is what causes ovulation, the release of the egg. Ovulation itself is a single day, not a stretch of days. It is a brief, potent event, not a phase.
Testosterone gets far less airtime in conversations about women's hormones, but it plays a real role here too. It rises modestly around ovulation and contributes to that felt sense of confidence, energy, and libido many women notice at this point in the cycle.
Progesterone rises after ovulation, once the follicle that released the egg transforms into what is called the corpus luteum. This is the entire luteal phase. Progesterone is the dominant hormone here, and it deserves so much more attention than it usually gets.
Prolactin is worth knowing about even though it is not a primary cycle hormone. It rises during breastfeeding, but it can also rise under chronic stress or undernourishment, and when it does, it can interfere with ovulation itself. This is one of the quieter ways stress disrupts a cycle.
Progesterone, the Unsung Hero
If estrogen gets to be the one everyone talks about, progesterone is the one that actually holds the whole system together. It is calming to the nervous system, it supports deep sleep, it is mildly thermogenic (which is why your temperature rises after ovulation, a beautiful built in marker of a healthy luteal phase), and it directly opposes and balances estrogen.
Progesterone is also often the very first hormone to drop when the body senses it is under stress or not adequately nourished. That is worth sitting with for a moment. Your body is not interested in building a strong luteal phase, in preparing a nourishing environment for a potential pregnancy, when it does not feel safe. Progesterone is a safety hormone as much as it is a reproductive one. Low progesterone can show up as a short luteal phase, irregular spotting before your period, anxiety or irritability in the days before your period, trouble sleeping, or a period that feels disproportionately hard.
Supporting progesterone is rarely about supplementing your way there. It is about creating enough internal safety, enough nourishment, enough rest, that your body feels it can afford to make it.
The Stress Hormone Connection
Here is where it gets interesting, and where so many women are never given the full picture. Your reproductive hormones and your stress hormones are not separate systems. They are deeply intertwined, sharing raw materials and responding to the same underlying signal of safety or threat.
Cortisol follows its own daily rhythm, highest in the morning to help you wake and rise, tapering through the day. It regulates blood sugar, blood pressure, and your ability to respond to stress. The trouble comes when stress becomes chronic rather than occasional, and cortisol stays elevated instead of following its natural taper.
Adrenaline is meant to be a short burst, mobilizing energy for an acute moment of stress, then stepping back. When the body is under chronic stress, it starts relying on adrenaline as a more constant source of get up and go. Think of your thyroid as the main power source for your body's home, and your adrenals as the generator (yes, the same adrenals that produce adrenaline). A generator is meant for emergencies, not for running the whole house. When it becomes the main source of power, something eventually burns out.
Pregnenolone is the quiet piece that ties this all together. It is the shared precursor, the raw material your body uses to make both cortisol and your reproductive hormones, including progesterone. Under chronic stress, the body will prioritize making cortisol because in that moment, survival feels more urgent than reproduction. Some call this the pregnenolone steal, raw materials being redirected toward stress hormones and away from the hormones that build a healthy cycle. This is one of the clearest, most physiological explanations for why chronic stress so often shows up as a disrupted cycle, a missing period, or a luteal phase that never quite gets the progesterone it needs.
Why Metabolism Is the Root of It All
None of these hormones exist in isolation from your metabolism. A well nourished, well fed body, one that is not chronically under eating or relying on stimulants to function, is a body that has the raw materials and the sense of safety to make hormones in healthy amounts and healthy rhythms.
This is the Root step of my coaching, coming back to internal safety and physiology first. Blood sugar balance, consistent nourishment, minerals like sodium and magnesium and calcium, enough sleep. These unglamorous basics are what actually allow estrogen, progesterone, and the rest of the cast to do their jobs the way they were designed to.
Estrogen Dominance, Gently Reframed
You have likely heard the term estrogen dominance, and it is genuinely common today, though maybe not for the reasons you would expect. It is rarely about having too much estrogen in some absolute sense. More often, it is about estrogen being unopposed, with too little progesterone around to balance it.
A few contributing factors worth naming, gently:
Chronic stress and the pregnenolone steal, pulling raw materials away from progesterone production
Undernourishment, which signals to the body that it is not a safe time to build a strong luteal phase
Impaired liver detoxification, since your liver is responsible for clearing used estrogen from your body, and it cannot do this well under chronic stress
Xenoestrogens, estrogen mimicking compounds found in some plastics, conventional beauty products, and certain environmental sources
The path forward is rarely about eliminating estrogen. It is about supporting the whole system so progesterone can rise to meet it. Balanced blood sugar, adequate minerals, gentle liver support, and reducing unnecessary xenoestrogen exposure where it is easy to do so, all of this is far more sustainable than fear based avoidance.
Coming Back Into Relationship With Your Hormones
Your hormones are not something happening to you. They are communication, a rhythm your body has been running long before anyone taught you to read it. Learning this language is not about perfection or optimizing every marker. It is about noticing, softening into what your body is already telling you, and nourishing it enough that it feels safe to find its own balance again.
This is the heart of cyclical living. Not a rigid protocol, but a relationship, built one cycle at a time.
If this stirred something in you, a sense that your body has been trying to tell you all of this for years, that's exactly the kind of listening we do together. A Complimentary Connection Call is a gentle first step to talk through where you are and whether working together feels right.