Perimenopause is the stretch leading up to menopause, and it usually starts somewhere in the forties and runs for several years. Hormone levels fluctuate through it rather than declining tidily, which is why it is much harder to track than the stage that follows. Nothing has settled yet, so nothing you record this month is guaranteed to describe next month.
Add a GLP-1, which is described as reducing appetite and slowing digestion, and you are watching two moving things at once. The temptation is to stop recording, on the reasonable grounds that the record keeps contradicting itself. That is exactly backwards. A contradictory record is the honest description of an unsettled stage, and it is far more useful to a clinician than a summary that has been smoothed out to sound coherent.
Logging a cycle that has stopped cooperating
A change to periods is usually the first sign of this transition. They may come more often or less often, and bleeding may be heavier or lighter than it used to be. None of that fits a tracker built around a predictable month, so track the events rather than the pattern.
- Every date you bleed, including short episodes you would previously have dismissed
- How heavy it was compared with what used to be normal for you, in your own words
- The gap in days since the last time, written as a number even when it looks wrong
- Any bleeding that turned up somewhere you did not expect it in the month
- Any month with nothing at all, marked as such rather than skipped over
After six months you will have a list of gaps. That list of numbers, uninterpreted, is one of the more informative things you can hand a clinician at this stage, and it is precisely what nobody can reproduce from memory.
Recurring symptoms versus one-off ones
The recognised symptom list here is broad: hot flushes, night sweats, sleep problems, tiredness, mood changes, and trouble with memory or concentration. Written down day after day, that list can start to feel like a description of ordinary life, which is why it helps to sort entries into two buckets as you go.
The first bucket is things that keep coming back. Give those a rough frequency and a note about whether that frequency is rising, falling, or holding steady. The second bucket is things that happened once and struck you as unlike you. Those get a date, a description, and no attempt at explanation.
Keeping them apart matters because they get treated differently in a consultation. A recurring pattern invites a conversation about management. A single unexplained event invites a question about what it was. Blend them into one list and both get less attention than they deserve.
Appetite notes when two things are pulling at once
Appetite reduction and slower digestion are described effects of this class of medicine, and hunger and food interest also shift through the transition for their own reasons. You will not resolve that from the inside, so do not try.
Write factually: when hunger appeared, whether a meal got finished, whether anything became difficult to eat, whether a portion that was fine last month is now too much or not enough. Put the date of your most recent dose in the same view. If your notes cluster around particular days of the dosing interval, that is worth someone seeing; if they scatter with no relationship to it at all, that is worth seeing too.
Resist grading yourself. A log full of good and bad days is a mood record. A log of what happened is evidence.
The pregnancy question, stated plainly
Ovulation can still happen during this stage, and pregnancy remains possible until a full year has passed since the final period. Irregular bleeding is a poor guide to whether that year has passed, which is why an unpredictable cycle is not on its own a reason to assume anything.
This page does not give contraception advice and will not suggest a method. What it will say is this: if there is any chance you could be pregnant, or if you are unsure about contraception while using a GLP-1, contact your prescriber, GP, or pharmacist promptly. Official guidance on GLP-1 medicines and pregnancy is specific, medicine-dependent, and not something to infer from a tracking article.
Presenting an unsettled record
You will not be able to summarise six unpredictable months in a sentence, so do not try to invent one. Bring the list of bleed dates and gaps, the recurring symptoms with their frequencies, the one-off events with their dates, and the appetite notes. Say up front that it is not consistent, because the inconsistency is the finding.
Then ask directly for what you want: whether the pattern needs investigating, whether anything on the list belongs to a different service, and what would be worth watching for before the next review. Write the answers down in the same place as everything else.
Where this page stops
Contact a healthcare professional promptly about bleeding that is much heavier than usual for you, bleeding that lasts far longer than it used to, bleeding after sex, or any bleeding that has resumed after a long gap and concerns you. Do the same for a low mood that is not lifting, for symptoms that are getting worse quickly, and for being unable to keep food or fluids down. Follow local emergency instructions where they apply.
Nothing here is a reason to change how you take any medicine. Notes are for the conversation; the decisions belong to the person qualified to make them with you.