Explain Stomach Problems: Pain, Diarrhea, Vomiting, and Nausea

This article teaches English communication for healthcare situations. It is not medical diagnosis or treatment advice. If you are vomiting blood, passing black or bloody stools, have severe abdominal pain with a high fever, are confused, are pregnant with severe lower-abdominal pain, can't keep any fluids down, or show signs of dehydration (dry mouth, dizziness, very little urine), get medical help or call 911 right away.

When talking about stomach symptoms in English, two traps are common: using "stomach" for the entire abdomen and being vague about location and quality of pain. Clinical English is more precise: upper abdomen, lower abdomen, around the belly button — plus descriptors like "dull," "sharp," and "cramping." If you can name location, quality, frequency, and trigger, you save a lot of back-and-forth.

Core Vocabulary

Term	Meaning	Example
stomachache	general belly ache (informal)	I've had a stomachache since this morning.
abdominal pain	clinical term for belly pain	I have abdominal pain in the lower right side.
upper abdomen	upper belly	The pain is in my upper abdomen.
lower abdomen	lower belly	I have cramping in my lower abdomen.
nausea	feeling like you might throw up	I've been feeling nauseous all day.
vomiting	throwing up	I vomited twice last night.
diarrhea	loose, frequent stools	I've had diarrhea since yesterday.
constipation	infrequent or difficult stools	I haven't had a bowel movement in four days.
bloating	feeling distended or full of gas	I feel really bloated after meals.
heartburn / acid reflux	burning behind the sternum	I get heartburn after spicy food.
cramping	wave-like, gripping pain	The pain comes in cramps.
sharp pain	stabbing, well-localized pain	It's a sharp pain on my right side.
dull pain	aching, constant pain	It's a dull, constant ache.
stool / bowel movement	bowel output	My stool has been very loose.
food poisoning	illness from contaminated food	I think it might be food poisoning.

Must-Know Phrases

The pain is in my [upper / lower / right / left] abdomen.
It's a [sharp / dull / cramping / burning] pain.
The pain comes and goes.
The pain is constant.
It's worse after eating.
I haven't been able to keep food down.
I've had diarrhea about [N] times today.
My stool is [watery / loose / very dark / has blood in it]. — describe appearance if relevant
I vomited [N] times since [time]. It looked [yellow / green / had blood in it].
I might have eaten something bad — I had [food] last night.
I'm pregnant / I might be pregnant. — important: affects medication choices
I'm taking [medication] for [condition].

Awkward vs Natural Phrasing

Less natural	More natural
My stomach is broken.	I have a stomachache. / I'm having stomach trouble.
I throw out a lot.	I've been vomiting a lot. / I've thrown up several times.
My poop is water.	My stool is watery. / I have watery diarrhea.
I want to vomit but I can't.	I feel nauseous. / I feel like I might throw up.
Stomach is full of gas.	I feel very bloated.
I cannot poop.	I haven't had a bowel movement in [N] days.

Situational Dialogue

Setting: urgent care exam room

Provider: What brings you in today?

You: I've had abdominal pain and diarrhea since last night. I think it might be something I ate.

Provider: Where exactly is the pain?

You: Mostly in my lower abdomen, around here. It comes in cramps.

Provider: How many times have you had diarrhea today?

You: Maybe seven or eight times. It's been very watery.

Provider: Any blood in your stool? Any vomiting?

You: No blood that I noticed. I vomited twice last night, but not since this morning.

Provider: Have you been able to drink fluids?

You: Just sips. I'm worried about getting dehydrated.

Replaceable Sentence Templates

The pain is in my [LOCATION], and it [comes and goes / is constant].
I've had [diarrhea / vomiting] about [N] times since [TIME].
It got worse after I ate [FOOD] / after I took [MEDICATION].
I [can / can't] keep fluids down.
I'm allergic to [DRUG], and I [am / might be] pregnant.

Practice

Say this in natural English: severe cramping pain in the lower right abdomen for about 6 hours.
Say this in natural English: vomited three times, with a streak of blood in the second one (and remember: blood always gets reported).
Say this in natural English: no bowel movement for four days and a very bloated belly.

Reference Answers

I have cramping pain in my lower right abdomen. It's been going on for about six hours.
I've vomited three times. The second time, I noticed a little bit of blood in it.
I haven't had a bowel movement in four days, and my stomach feels really bloated.

Copy-Ready Pre-Visit Summary

Chief complaint: Abdominal pain and diarrhea
Onset: Started last night around 10 pm (about 14 hours ago)
Location: Lower abdomen, mostly central and right side
Pain quality: Cramping, comes and goes, 6/10 at worst
Diarrhea: ~8 episodes today, watery, no visible blood
Vomiting: 2 times last night, none since morning
Triggers: May have eaten undercooked seafood at dinner
Fluids: Drinking sips of water and electrolyte drink, keeping most down
Pregnancy: No / Yes (X weeks) / Possible — last period [date]
Allergies: None / [list]
Current meds: None / [list]

A Note on Medical Boundaries

This article is for English communication practice only — don't use it to decide whether you "just" have gastroenteritis. If you vomit blood, pass black tar-like stools, see bright red blood in your stool, have severe abdominal pain, run a high fever, can't keep any fluids down, are clearly dehydrated (dry mouth, dizziness, very little urine), or are pregnant with severe lower-abdominal pain or any bleeding, call 911 or go to the nearest emergency room right away.