The hidden hormone patterns behind your perimenopause symptoms

For many women, their 40s bring a wave of changes that feel hard to pin down. Heavier periods one month and lighter the next, sleep that suddenly becomes fragile, mood shifts that don’t match what’s happening in life, unexplained weight gain, or a sense that your body is reacting differently to stress.

These changes aren’t random. They’re often the first signs of the oestrogen–progesterone shift that happens in perimenopause,  a transition that can begin earlier than many expect. Understanding what’s happening beneath the surface, can make this phase feel far less confusing and far more manageable.

Oestrogen: The fluctuating hormone

Oestrogen doesn’t decline steadily, it becomes erratic. Some months it surges, other months it dips, and your symptoms follow suit. How you metabolise your oestrogen can also impact the severity of your symptoms.  Oestrogen can be broken down in the body via 3 pathways, some exerting stronger oestrogenic effects than others.

You might notice:

• Heavy or clotting periods

• Breast tenderness

• Mood swings

• Bloating or water retention

• Mid‑cycle pain or spotting

These fluctuations can make things feel very unpredictable.

Progesterone: The first hormone to decline

Progesterone is your calming, soothing hormone and it’s often the first to drop in your late 30s and early 40s.

Low progesterone can show up as:

• Anxiety or feeling “on edge”

• Poor sleep or early waking

• Spotting before your period

• PMS that feels more intense than it used to

Because progesterone balances oestrogen, a drop can make oestrogen‑related symptoms feel louder.

Why symptoms feel so unpredictable

Perimenopause isn’t a straight line,  it’s a rollercoaster. Cycles may shorten, lengthen, or skip. Symptoms may come and go. You may feel like a different version of yourself from one month to the next.

This is because:

• Oestrogen is fluctuating

• Progesterone is declining

• Stress can amplify everything

What you can influence

While hormone shifts are natural, there are supportive foundations that make a meaningful difference:

• Blood sugar balance to stabilise energy and mood

• Anti‑inflammatory nutrition to reduce systemic inflammation and support cardiovascular health

• Nervous‑system support to buffer stress

• Physical activity to support blood sugar balance, reduce stress and improve mood (endorphins) and sleep

• Cycle awareness to understand your personal patterns

These steps can help your hormones work with you, rather than against you.

When you want clearer answers

If you’ve been wondering whether your symptoms are linked to changes in oestrogen, progesterone, or how your body is processing them (as well as the impact of stress and other hormones, such as melatonin), the DUTCH test is one option that can offer deeper

clarity. Take a look under my Testing tab to find out more.

I offer a free pre‑test chat if you’d like to explore whether this type of testing is right for you. There’s no pressure, just a chance to understand your options and feel more informed.