Is it Stress or Something Else?

Woman reflecting quietly

Updated July 2026

It is 2am, and you are staring at the ceiling doing the maths again. Not real maths. The other kind. How many hours until the alarm. How many hours of sleep that leaves, if sleep comes at all. You have done this most nights this month.

You used to bounce back from tired. A late night, a rough week, a bad month even, and you would find your footing again. Lately the footing is not there. You cried in the car after a perfectly ordinary conversation with your sister. You forgot your own nephew's birthday, something you never do. You snapped at your husband over a dish left in the sink, and the size of your reaction frightened you more than it did him.

You have told yourself it is just stress. You are, after all, busy in all the ordinary ways a woman in her forties is busy. But a quieter, more honest part of you suspects this is not that.

What Is Actually Happening

Here is what nobody told you about this decade of your life. Perimenopause is not simply the run-up to your last period. It is a years-long hormonal transition, and the hormones doing most of the work behind the scenes are oestrogen and progesterone, which do far more in your body than regulate your cycle.

Oestrogen has a direct hand in how your brain manages serotonin and dopamine, the chemicals involved in mood, motivation, and focus. It also affects your amygdala, the part of the brain responsible for processing threat and emotional reactivity. Progesterone, meanwhile, has a calming effect on the nervous system. When both begin to fluctuate, often years before periods become irregular enough to notice, the knock-on effects show up first in mood, sleep, and emotional regulation. Not in a hot flush. In the sink argument. In waking at 3am with your heart racing for no reason you can name.

This is why what you are feeling can genuinely resemble stress and, at the same time, be something more layered than stress. Ordinary stress rises and falls with what is happening around you. It responds to a good night's sleep or a resolved problem. What many women in their forties describe to me is different. The irritability, the tears that arrive without warning, the sense of being one small thing away from unravelling, these do not reliably lift when the stressful event passes. They have their own rhythm now, one connected to what is happening in your body rather than only what is happening in your week.

How This Shows Up in Real Life

You might recognise this. You are competent at your job, you always have been, but lately you read the same email three times and still cannot hold the content in your head. You put it down to being overworked. Then you notice it happens on quiet days too, and you start to wonder, quietly and with some fear, whether something is wrong with your mind.

You might recognise this too. Your children are not doing anything unusual, and yet their ordinary noise, the bickering, the questions, the requests, feels unbearable in a way it did not two years ago. You leave the room to compose yourself and wonder what is wrong with you, when the honest answer is that your nervous system's baseline has shifted and nobody explained that to you.

Or perhaps it shows up at work, in a meeting where you would normally speak up without a second thought. Instead you find your words scattering mid-sentence, your face going hot, your heart picking up pace over nothing more threatening than a routine question from a colleague. You leave feeling as though you do not recognise yourself professionally anymore, and you say nothing to anyone, because how do you explain a feeling you cannot fully explain to yourself.

A pattern I see often in my practice is a woman who has spent months, sometimes years, quietly auditing herself. Am I working too hard. Am I not managing my time well. Am I simply not coping the way I used to. She rarely arrives at the answer that her body is moving through a significant biological transition, because nobody has framed it to her that way. She has been handed "stress" as the only available explanation, and she has done her best to make it fit.

Why the Misattribution Costs You

This matters because "just stress" and a hormonally driven shift in mood and cognition call for different things from you.

Stress responds to rest, to a lighter load, to the problem being solved. If what you are carrying is being shaped by perimenopause, those same solutions bring some relief but never quite enough. You take the holiday. You come back and the fog is still there. You get eight hours of sleep and wake up flat regardless. Over months of this, many women quietly conclude that they are simply failing at something everyone else seems to manage. That conclusion is not true, but it is a very natural one to reach when you have been given the wrong explanation for what you are experiencing.

The cost is not only emotional. Women who misattribute perimenopausal changes to personal failing often delay getting support, because you cannot ask for help with a problem you believe is a character flaw. You can only ask for help with something you understand to be real. Some women also stay quiet with their partners or families about what they are experiencing, assuming it will pass, and the isolation that follows can be as difficult to carry as the original symptoms.

What Can Help

Understanding what is happening in your body is not about finding a new label to sit with. It is about giving yourself access to the right kind of support, and the right kind of patience with yourself.

Track the pattern, not just the feeling. Rather than only noting that you feel low or anxious, notice when. Is it tied to a particular week, a particular kind of demand, or does it seem to have a rhythm independent of what is happening around you. This distinction is often the first thing that helps a woman see her experience clearly.

Say it out loud, to someone. Naming what you suspect, even tentatively, to a friend, a sister, a partner, reduces its hold on you. Many women carry this privately for a long time before saying a single word about it, and are surprised by how much lighter it feels once they do.

Separate the guilt from the experience. The irritability, the fog, the tears, these are not evidence of who you are. They are a response your body is having to a real hormonal shift. You are allowed to have compassion for yourself here in a way you might not have been extending.

Protect the basics without expecting them to fix everything. Sleep, movement, and steady meals still matter and are still worth prioritising. But if you have done all of this and still feel unlike yourself, that is information, not a sign that you are not trying hard enough.

Give yourself a timeline for noticing, not for fixing. You do not need to solve this today. Give yourself a few weeks of simply observing with curiosity rather than judgment. Clarity tends to come before solutions, not after them.

When to Seek Professional Support

If what you are experiencing has been going on for weeks rather than days, if it is affecting your work, your relationships, or your sense of yourself, or if you simply want to understand what is happening to you with more clarity, this is a reasonable and worthwhile time to speak with a professional. A psychologist can help you understand what is stress, what may be hormonally driven, and what may be a mental health condition that has emerged alongside the transition, and can help you find the right kind of support for what is actually going on. This is not a substitute for medical assessment of your hormonal health, and a conversation with your doctor alongside psychological support is often the most complete approach.

A pattern I see often in my practice is women who arrive certain that they are simply falling behind, not managing life the way they once did, and who are visibly relieved once we start talking about what perimenopause actually does to the brain. Many say they wish someone had explained this to them years earlier.

You have spent a long time being the one who manages everything for everyone. Understanding this season of your life is not one more thing to manage. It is permission to finally understand yourself.

If you would like structured support in exploring this, our This Season, Yours webinar series was created for exactly this moment, or you are welcome to book a session directly.

Questions Women Often Ask Us

How do I know if what I'm feeling is stress or perimenopause?

Stress usually eases once the situation causing it resolves. If your mood, sleep, or irritability has stayed difficult for weeks regardless of what is happening around you, that persistence is often the clearer signal, not the intensity of any single bad day.

Can perimenopause really cause anxiety and mood swings?

Yes. Fluctuating oestrogen and progesterone directly affect the brain systems that regulate mood, focus, and emotional reactivity. This is a measurable physical process, not a personal or emotional failing.

What age does perimenopause usually start?

Many women begin noticing changes in their late thirties or forties, often years before periods become noticeably irregular. This is why the connection to hormones is so often missed.

Is brain fog a normal part of perimenopause?

It is a commonly reported experience during this transition. That said, if it is significantly affecting your work or daily functioning, it is worth discussing with a professional rather than assuming it must simply be managed alone.

When should I see a professional about this?

If symptoms have lasted more than a few weeks, are affecting your relationships or work, or you would simply like clarity, that is reason enough. You do not need to wait until things feel unmanageable.

This post is for educational purposes only and is not a substitute for professional psychological assessment or treatment. If what you have read here resonates and you would like support, you are welcome to book a session. If you are in immediate distress, please contact your local emergency services or a crisis helpline in your country.