If bloating keeps returning, the NHS says to see a GP if you feel bloated regularly or if changing your diet has not helped. You do not need a diagnosis, a theory about food or a perfect diary first. The details that help most are how often it happens, for how long, what it feels and looks like, what else is happening alongside it, what it stops you doing, and what you have already tried. A few weeks of rough notes can supply most of that.
This guide is about describing the problem. It cannot say what is causing your bloating or whether you need tests, and it is not medical advice.
Start with how often, because it matters
“I’m bloated a lot” can mean three days a month or most days. Frequency is the detail a clinician cannot guess.
Official guidance treats frequency as meaningful. The British Society of Gastroenterology (BSG) education page on bloating and distension reports that NICE defines “persistent” symptoms as lasting over a month and “frequent” ones as occurring more than 12 times a month. The NHS page on ovarian cancer symptoms uses a similar idea: a swollen tummy or feeling bloated roughly 12 or more times a month is the kind of pattern it asks people to mention. These thresholds come from guidance about when to look further, not from a way to rate your own symptoms, and bloating has many common explanations. They do show why a count is more useful than an adjective.
A simple way to give it:
- how many days in the last four weeks you were bloated;
- whether that is more, less or about the same as the month before;
- when it started, even roughly (“since the spring”, “since I changed jobs”).
If your memory is vague, a short diary gives you the count. The guide to how long to keep a food and symptom diary explains why a few weeks is often enough for this purpose.
Say which kind of bloating you mean
The BSG page says clinicians are advised to ask about distension, a measurable increase in abdominal size, as well as bloating, a sensation of fullness, because the two can occur separately and may have different mechanisms. So it helps to say:
- whether it is mainly a feeling of fullness, pressure or tightness;
- whether your tummy looks or measures larger, for example clothes feeling tighter, or whether you are not sure;
- whether you notice more belching or passing wind.
You can use your own words. The article on describing bloating, a swollen tummy and gas shows a short way to note each separately. Neither “feels bloated” nor “looks bloated” is a more serious answer; the point is to be accurate.
Mention the time of day and the rhythm
The same BSG page notes that symptoms that worsen through the day, particularly after meals, and settle overnight are typical of functional causes, whereas organic causes tend to show no daily variation. “Functional” here means symptoms without a visible structural cause. You are not expected to interpret this yourself, but a clinician may find it useful to hear whether yours builds up, comes in bursts after eating, or is there when you wake.
A before-meal note makes this easier to see. The article on whether a symptom was already building before a meal explains how.
Describe the bowel side in plain words
Bloating can come with changes in bowel habit, and the NHS lists diarrhoea or constipation with bloating among its reasons for an urgent GP appointment, so they are worth stating clearly. Say whether your bowel habit has changed, whether passing a stool or wind eases the bloating, and anything else that has changed, such as appetite, tiredness or weight. If you note stool form, the Bristol Stool Scale guide shows how to do it without turning it into a health score.
Unintended weight loss and blood in your poo are named by the NHS as reasons to see a GP. Say so at the start if either applies.
Give food observations as observations
If you suspect a food, say what you have seen and what you have not. For example: “Twice after a large pasta dinner, but not after a smaller portion last week, and once on a day I had none.” Include the examples that do not fit. The NHS also notes that a GP may refer you to a dietitian when general diet advice has not helped, so saying what you have already changed, and what happened, is useful.
Avoid cutting out several foods before the appointment just to make the story cleaner. A food and symptom diary shows what happened alongside what, not why. The article on telling which meal caused bloating explains why one entry rarely settles it.
Add the context that could change the picture
The NHS advises bringing a list of medicines, including over-the-counter products, vitamins and supplements, and noting when symptoms started and what makes them better or worse (the page was last reviewed in January 2023). Add anything that coincided with the change: a recent stomach bug, a course of antibiotics, a new medicine, a change in routine or stress. You do not need to decide whether it matters.
If your bloating seems to shift around your period, note where in your cycle it tends to fall; the guide to recording the menstrual cycle alongside symptoms shows how, without assuming a cause. The NHS ovarian cancer page also asks you to tell the GP if anyone in your family has or had ovarian or breast cancer, so family history is worth mentioning.
Say what it stops you doing
Impact helps a clinician judge how much the problem matters, and it is often the part people leave out. Mention anything it changes: clothes you avoid, meals or plans you skip, sleep disturbed, exercise or work affected. The guide to recording how digestive symptoms affect daily activities offers plain wording.
Put it on one page
An order that works: how often and since when, what it feels and looks like, timing across the day, bowel changes and other symptoms, food and other observations, including exceptions, what you have tried, medicines and context, impact, and your two or three main questions. The free appointment summary tool follows this structure and runs in your browser, and the GP summary guide covers the general version for any digestive symptom.
If keeping the underlying record is the hard part, GutBloom is designed to put meals, symptoms and selected context on one timeline and keep uncertainty visible, which can make counting days easier. You can get GutBloom on Google Play.
When not to wait for notes
Notes are helpful, not a requirement. The NHS says to ask for an urgent GP appointment or call 111 if bloating comes with vomiting, diarrhoea or constipation, a stomach ache, a fever, a swelling or lump in the tummy, or being unable to pee, poo or fart. It says to call 999 or go to A&E for a swollen stomach with a sudden severe stomach ache, vomiting blood or vomit that looks like ground coffee, or severe breathing difficulty. The page was last reviewed on 21 January 2026, so check the current version. Outside the UK, use your local equivalent.
The BSG page also notes that, under NICE guidance, the CA125 blood test is offered routinely to women aged 50 or over who report persistent or frequent bloating, and that it should be offered to women aged 40 to 49 where clinical suspicion is high. That is one more reason not to delay an appointment while you collect entries.
This article has not been professionally reviewed.