First: the ones that are not for logging
This section is first deliberately. Everything else on this page is about building a record over weeks. These are the symptoms where the correct action is to stop reading and get medical help.
Separately, and less acutely but still promptly: any vaginal bleeding that is unexplained — bleeding after twelve months without a period, bleeding that is unexpected for your regimen, unusually heavy bleeding, or bleeding with clots — should be assessed by a clinician rather than monitored. Guidance on unscheduled bleeding on HRT exists precisely because it is common and because most causes are not serious, but it is investigated rather than watched.
A record is for the slow, ambiguous, cumulative things. It is not a substitute for urgent care, and treating it as one is the one genuine risk of symptom tracking.
The five fields that make a note usable
Most side-effect notes are unusable, not because they lack detail but because they lack a date. "Been getting headaches since I switched" is a sentence that cannot be evaluated. Five fields fix it.
| Field | What to write | Why it matters |
|---|---|---|
| What | Plain description. "Breast tenderness, both sides." | Precision beats vocabulary. You do not need the clinical term. |
| Start date | The actual date, as best you can place it. | The interval between a change and a new symptom is the entire question. |
| What changed before | Dose change, route change, brand change, missed doses, new medicine. | A brand substitution at the pharmacy is a change, and it is the one people never mention. |
| How bad | Your usual severity scale, kept the same as everywhere else. | Lets you see later whether it settled or escalated. |
| Direction | Better / worse / same, re-checked after a week or two. | Many early effects settle. Direction is what distinguishes those from the ones that do not. |
That is roughly one line of text plus a date. It does not need to be a paragraph, and paragraphs are why people stop writing them.
Why the start date carries so much weight
A change in hormone therapy takes time to express itself, and published patient guidance generally describes a settling-in period of weeks to a few months before the effect of a change can be judged. HRT AI's own summaries say something similar — that a regimen typically takes six to twelve weeks to settle, so it may still be early to read a signal after a recent change.
That timescale is what makes the date decisive. A symptom starting four days after a route change and a symptom starting four months after it are different observations, and there is no way to tell them apart later without the date. Retrospective reconstruction reliably compresses toward "around when I switched", which is the answer most likely to mislead.
Recording the change itself matters equally. Note what changed and when: dose, route, product, brand, or a gap in supply. A pharmacy substituting one product for another is a genuine variable and is almost never mentioned in appointments, because it does not feel like a change the patient made.
Commonly reported effects, and what to note about each
This is not a complete list and nothing here is a prediction about you. It is a list of things people commonly report and often fail to record usefully. What any of it means for your therapy is a clinical question — the point of the notes is to make that question answerable.
- Breast tenderness
- Note whether it is one side or both, and whether it tracks a phase of a sequential regimen. One-sided changes, and any new lump, skin change or nipple discharge, are a separate matter and should be assessed rather than logged.
- Headaches
- Note frequency, whether they differ from your usual pattern, and — importantly — whether there is any visual disturbance or aura, because migraine with aura is specifically relevant to the hormone-therapy conversation. A severe or unusual new headache belongs in the urgent section above.
- Bleeding changes
- Note the dates, the flow, whether there were clots, and where the bleeding sits relative to the progestogen phase if your regimen is sequential. Timing is what makes bleeding interpretable — see delivery routes and regimens. Unexplained bleeding goes to a clinician promptly.
- Mood changes
- Note whether they align with a phase of the cycle or with a dose change, and record impact separately from feeling. Some people report mood changes that track the progestogen phase; whether yours do is a dates question. See sleep and mood tracking.
- Skin reactions at an application site
- Note the site, whether you rotate, and whether it recurs at the same place. Route- and site-specific problems often have practical solutions.
- Nausea, bloating, fluid retention, weight change
- Note the start date and the direction over a few weeks. These are the effects most likely to change over the settling period, which makes the direction field more informative than the initial severity.
- Leg symptoms
- Ordinary aches are worth noting. New pain, swelling, warmth or redness in one leg is not — that is an urgent assessment. The distinction is one-sided and new versus general and gradual.
Things that look like side effects and are not
Three confounders account for a large share of apparent side effects, and all three are visible only if you record them.
- Missed or late doses. An interrupted regimen produces symptoms that read as the therapy failing or as a new problem. Recording adherence is what separates them, which is the main reason dose and symptoms belong in the same log rather than two.
- Supply gaps. A prescription that did not renew, a product out of stock. From the outside this is indistinguishable from non-adherence, and both look like a clinical event. Note the reason for any gap.
- Everything else in your life. A viral illness, a new medicine, a stressful month, a heatwave. A one-word note on unusual days stops a bad fortnight being attributed to a dose change that happened to coincide with it.
Raising it without waiting for the review
You do not have to save everything for the scheduled appointment. Anything in the urgent list goes now. For everything else, a useful rule of thumb: if it is getting worse over two weeks rather than settling, if it is affecting what you can do, or if you are considering stopping your therapy because of it, contact your clinician rather than waiting.
Stopping hormone therapy is a clinical decision too. If a side effect is bad enough that you want to stop, that is a conversation to have — not because you are obliged to continue, but because there are usually options between "carry on as you are" and "stop", and because an unplanned stop can produce its own symptoms that then get attributed to something else.
When you do raise it, bring the five fields. "Breast tenderness, both sides, started 11 March, four days after the patch strength changed, about a 4 out of 5, no better after three weeks" is a report a clinician can act on in one sentence. HRT AI keeps side-effect notes attached to the dose timeline, freezes each dose and route change with a summary of what changed, and can compare the four weeks before a change with the four weeks after — so the interval question answers itself. Where a pattern crosses a threshold it flags a question for your next appointment, with the source it came from, rather than an interpretation.
