Why Does Your Stomach Feel Off?

Understanding Nausea, Stomach Upset & Warning Signs

Sometimes you can't quite describe what's wrong. Your stomach doesn't necessarily hurt, but something feels off.

Maybe you're slightly nauseated. Food suddenly doesn't sound appealing. Your stomach feels unsettled, you're experiencing mild cramping, or you keep wondering whether you're about to throw up.

Then come the questions: Was it something I ate? Am I getting sick? Is this going to get worse?

An upset stomach can have many possible causes. Viral illnesses, foodborne illnesses, dehydration, medications, changes in eating habits, indigestion, stress, and other medical conditions may all cause digestive symptoms.

For eligible non-emergency nausea, vomiting, diarrhea, and gastrointestinal symptoms, UrgentCare2Go can bring medical evaluation directly to you, with treatment and follow-up recommendations based on the provider's assessment.

“My Stomach Feels Off” Can Mean A Lot Of Things

One person's upset stomach may feel completely different from another's.

You might experience:

Nausea
Mild abdominal cramping
Bloating
Loss of appetite
Indigestion
Diarrhea
Vomiting
Gas
General abdominal discomfort
A feeling that you may vomit without actually doing so

Try to describe exactly what you're feeling rather than simply saying you have a stomachache.

Those details can help during a medical evaluation.

When Did It Start?

Timing can provide useful clues.

Ask yourself:

Did the symptoms begin suddenly?
Did they gradually develop?
Did they start after eating?
Did you wake up feeling sick?
Did someone else who ate the same food become ill?
Have symptoms lasted several hours or days?
Are they getting better or worse?

A short episode of mild nausea is different from symptoms that continue worsening or prevent you from drinking fluids.

Could It Be Something You Ate?

Possibly.

Foodborne illnesses can develop after eating food contaminated with certain bacteria, viruses, parasites, or toxins.

Symptoms may include:

Nausea
Vomiting
Diarrhea
Abdominal cramps
Fever
General weakness

Symptoms don't always begin immediately after the meal that caused them.

Depending on the organism involved, illness can begin hours or even days later.

So the last thing you ate isn't automatically responsible.

What If Everyone Who Ate Together Feels Sick?

If multiple people who shared the same food develop similar gastrointestinal symptoms, tell your healthcare provider.

Helpful information includes:

What everyone ate
When the meal occurred
When symptoms began
Which symptoms everyone has
Whether anyone has fever
Whether anyone has severe symptoms

That pattern may provide useful information when determining whether a food-related illness is possible.

Could It Be A Stomach Virus?

Yes.

Viral gastroenteritis—often casually called a “stomach bug”—can cause:

Nausea
Vomiting
Diarrhea
Abdominal cramping
Decreased appetite
Sometimes fever or body aches

These illnesses can spread between people, particularly through contaminated hands and surfaces.

But nausea or diarrhea alone doesn't prove you have a virus.

Other conditions can cause similar symptoms.

“Stomach Flu” Isn't Actually Influenza

The phrase “stomach flu” is commonly used to describe vomiting and diarrhea.

But influenza primarily affects the respiratory system.

A gastrointestinal virus and influenza are not the same illness.

Using more specific symptom descriptions—such as vomiting, diarrhea, nausea, fever, cough, or congestion—can help your healthcare provider better understand what's happening.

Is Nausea Always Followed By Vomiting?

No.

You can feel intensely nauseated without ever vomiting.

Nausea may feel like:

Queasiness
Stomach turning
Loss of appetite
Feeling like food is unappealing
Feeling as though you might vomit

Tell your provider whether nausea is constant or comes in waves and whether eating or drinking makes it better or worse.

What About Diarrhea?

Diarrhea can occur with:

Viral illnesses
Foodborne illnesses
Certain medications
Dietary changes
Food intolerances
Other gastrointestinal conditions

Pay attention to:

How frequently it occurs
How long it has lasted
Whether you can drink fluids
Whether fever is present
Whether blood appears in the stool
Whether significant abdominal pain occurs

Frequent diarrhea can increase the risk of dehydration.

Vomiting Can Dehydrate You Quickly

One or two episodes of vomiting may not cause significant dehydration in an otherwise healthy adult.

Repeated vomiting is different.

If you're unable to keep liquids down, your body can lose both fluid and electrolytes.

Watch for:

Dry mouth
Increased thirst
Dark urine
Reduced urination
Weakness
Lightheadedness
Fatigue

Children, older adults, pregnant patients, and people with certain chronic conditions may become dehydrated more quickly.

Can You Keep Fluids Down?

This is one of the most useful questions when you're sick to your stomach.

If you're vomiting, try to notice whether you can tolerate small amounts of fluid.

Repeatedly vomiting everything you drink is more concerning than mild nausea while still being able to hydrate.

Persistent inability to keep fluids down deserves medical attention.

Don't Gulp A Huge Glass At Once

When you're thirsty after vomiting, it's tempting to drink a large amount immediately.

For some people, that can trigger more nausea or vomiting.

Small, frequent amounts of appropriate fluids may be easier to tolerate.

If you continue vomiting despite attempts to hydrate, seek medical guidance.

What About Electrolytes?

Vomiting and diarrhea can cause loss of water and electrolytes.

Depending on your situation, an oral rehydration solution may be appropriate.

Be especially cautious with dehydration if you:

Are very young or older
Are pregnant
Have kidney disease
Have heart disease
Have diabetes
Take medications that affect fluid balance

Individual medical needs can differ.

Could A Medication Be Upsetting Your Stomach?

Yes.

Many medications and supplements can cause gastrointestinal side effects.

Possible symptoms include:

Nausea
Indigestion
Diarrhea
Constipation
Abdominal discomfort

If symptoms started after beginning or changing a medication, tell your provider.

Don't stop an important prescription medication without appropriate medical guidance.

Antibiotics Can Affect Your Stomach Too

Antibiotics can sometimes cause gastrointestinal side effects, including diarrhea and nausea.

If you develop diarrhea while taking antibiotics—or shortly after completing them—tell your healthcare provider.

Severe, persistent, or bloody diarrhea after antibiotic use deserves medical attention.

Could Stress Make Your Stomach Feel Off?

For some people, yes.

The digestive system and nervous system are closely connected.

Stress or anxiety may contribute to:

Nausea
Appetite changes
Abdominal discomfort
Bowel changes

However, don't automatically dismiss persistent or worsening gastrointestinal symptoms as “just stress.”

New symptoms still deserve appropriate evaluation when necessary.

Where Exactly Does It Hurt?

If abdominal pain develops, location matters.

Try to identify whether discomfort is:

Upper abdomen
Lower abdomen
Right side
Left side
Around the belly button
Everywhere
Moving from one location to another

Also describe whether the pain is:

Cramping
Burning
Sharp
Dull
Constant
Coming in waves

Specific or worsening abdominal pain may require additional evaluation.

Severe Abdominal Pain Is Different

Mild stomach cramping can occur with many common gastrointestinal illnesses.

Severe or rapidly worsening abdominal pain is different.

Seek prompt medical attention when pain is:

Severe
Suddenly intense
Rapidly worsening
Associated with a rigid or very tender abdomen
Accompanied by repeated vomiting
Associated with fainting or severe weakness
Occurring with significant bleeding

Some causes of abdominal pain require imaging, laboratory testing, surgery, or other facility-based care.

What About Pain On The Lower Right Side?

Abdominal pain that becomes increasingly focused in one area—particularly the lower right abdomen—deserves medical attention.

Appendicitis is one possible cause, but symptoms alone cannot diagnose it.

Other symptoms may include:

Loss of appetite
Nausea
Vomiting
Fever
Increasing pain

Suspected appendicitis requires facility-based evaluation and may require imaging or surgery.

What If The Pain Is On The Upper Right Side?

Upper-right abdominal pain can also have several possible causes.

If significant pain occurs—particularly with:

Fever
Persistent vomiting
Yellowing of the skin or eyes
Significant tenderness
Rapidly worsening symptoms

seek appropriate medical evaluation.

Some abdominal conditions cannot be safely evaluated through routine mobile care alone.

Blood Changes The Situation

Blood in vomit or stool should not simply be ignored.

Seek medical attention for:

Vomiting blood
Vomit that resembles coffee grounds
Black, tarry stool
Significant bright-red blood in stool
Bloody diarrhea

The urgency depends on the amount of bleeding and accompanying symptoms.

Heavy bleeding, fainting, severe weakness, confusion, or signs of shock require emergency care.

What About Fever?

A mild fever can occur with some gastrointestinal infections.

But fever becomes more concerning when it occurs alongside:

Severe abdominal pain
Persistent vomiting
Bloody diarrhea
Significant weakness
Confusion
Rapidly worsening illness

Tell your provider your highest measured temperature and how long the fever has been present.

Pregnancy Is Important To Mention

Nausea and vomiting can certainly occur during pregnancy.

However, don't assume every episode is routine morning sickness.

Tell your provider if you're pregnant or could be pregnant, particularly when symptoms involve:

Significant abdominal or pelvic pain
Vaginal bleeding
Fainting
Severe vomiting
Inability to keep fluids down
Significant weakness

Some pregnancy-related conditions require urgent facility-based evaluation.

Mobile Stomach Symptom Evaluations That Come To You

When you're nauseated, vomiting, or constantly running to the bathroom, getting dressed and sitting in a waiting room probably isn't high on your list.

For eligible non-emergency gastrointestinal symptoms, UrgentCare2Go can bring medical evaluation directly to you.

Depending on your symptoms, medical history, available services, and provider assessment, your visit may include:

Medical evaluation
Vital signs
Abdominal symptom review
Hydration assessment
Vomiting and diarrhea review
Medication review
Food and exposure history
Illness exposure review
Abdominal assessment when appropriate
Testing recommendations when appropriate
Treatment recommendations
Medication when clinically appropriate
Hydration treatment when clinically appropriate and available
Follow-up guidance
Referral for facility-based care when necessary

Some gastrointestinal conditions require laboratory testing, imaging, surgery, or emergency treatment that cannot be provided during a routine mobile visit.

What Should You Tell Your Provider?

Helpful information includes:

When symptoms began
Whether nausea or vomiting came first
How often you've vomited
How frequently you have diarrhea
Whether you can keep fluids down
Whether you have fever
Where your abdomen hurts
Whether pain is worsening
Whether blood is present
What you've recently eaten
Whether anyone around you is sick
Recent travel
Recent antibiotic use
Current medications
Whether pregnancy is possible
Any significant medical conditions

The more specific you can be, the better.

When An Upset Stomach Deserves Evaluation

Consider medical evaluation when:

Nausea isn't improving.
Vomiting continues.
Diarrhea is persistent or frequent.
You're struggling to stay hydrated.
Fever develops.
Abdominal discomfort persists.
Symptoms keep worsening.
You recently started a medication.
Several people became ill after eating together.
You're pregnant or may be pregnant.
You're unsure what's causing the symptoms.

You don't need to know whether it's a virus, food poisoning, or something else before seeking care.

When To Seek Prompt Medical Care

Seek prompt medical attention for:

Persistent inability to keep fluids down
Signs of significant dehydration
Severe or worsening abdominal pain
Bloody diarrhea
Blood in vomit
Black or tarry stool
Persistent vomiting
High or persistent fever with worsening illness
Significant weakness or lightheadedness
Concerning symptoms during pregnancy
Rapidly worsening symptoms

These situations may require facility-based testing or treatment.

🚨 When To Seek Emergency Care

Seek emergency care for:

Severe or sudden abdominal pain
Heavy gastrointestinal bleeding
Vomiting blood with severe weakness or fainting
Severe dehydration with confusion or loss of consciousness
Signs of shock
Severe abdominal pain with a rigid abdomen
Severe pregnancy-related abdominal pain or bleeding
Another life-threatening emergency

SEVERE PAIN + BLEEDING, FAINTING, OR SERIOUS ILLNESS = DON'T WAIT

Frequently Asked Questions

Can UrgentCare2Go evaluate stomach problems?

Yes. UrgentCare2Go can evaluate eligible non-emergency nausea, vomiting, diarrhea, and gastrointestinal symptoms when clinically appropriate.

Does nausea mean I'm going to vomit?

No. Nausea can occur without vomiting.

Does diarrhea automatically mean I have a stomach virus?

No. Viral illness is one possibility, but foodborne illness, medications, dietary factors, and other conditions may cause diarrhea.

How do I know if food made me sick?

Timing, symptoms, what you ate, and whether others became ill can provide clues, but identifying the exact cause isn't always possible from symptoms alone.

Can vomiting cause dehydration?

Yes. Repeated vomiting can lead to fluid and electrolyte loss, particularly if you can't keep liquids down.

Can medications cause nausea?

Yes. Many medications and supplements can cause nausea or other gastrointestinal side effects.

Can stress upset your stomach?

Stress may contribute to digestive symptoms in some people, but persistent or concerning symptoms shouldn't automatically be attributed to stress.

Should I worry about blood in my stool?

Visible blood, bloody diarrhea, or black tarry stools deserve medical attention. Significant bleeding with fainting, severe weakness, or other serious symptoms may require emergency care.

When is abdominal pain more concerning?

Severe, sudden, localized, or rapidly worsening abdominal pain—particularly with vomiting, bleeding, fever, fainting, or severe illness—needs prompt evaluation.

When should I go to the ER?

Severe abdominal pain, significant gastrointestinal bleeding, severe dehydration with confusion or loss of consciousness, signs of shock, or another life-threatening condition requires emergency care.

Compliance Statement

UrgentCare2Go provides mobile medical evaluation and care for eligible non-emergency nausea, vomiting, diarrhea, stomach upset, and related gastrointestinal symptoms when clinically appropriate. Evaluation and treatment recommendations depend on provider assessment, medical history, symptom severity, available services, and clinical judgment.

Gastrointestinal symptoms have many possible causes and should not automatically be diagnosed as food poisoning, viral gastroenteritis, dehydration, or another specific condition based on symptoms alone. Severe or rapidly worsening abdominal pain, significant gastrointestinal bleeding, severe dehydration, concerning pregnancy-related symptoms, fainting, confusion, signs of shock, or other serious symptoms may require laboratory testing, imaging, surgery, emergency treatment, or other facility-based care.

Schedule Your Visit

Sometimes your stomach doesn't exactly hurt. It just feels wrong.

When that unsettled feeling turns into nausea, vomiting, diarrhea, cramping, or difficulty staying hydrated, pay attention to how your symptoms are changing.

For eligible non-emergency gastrointestinal symptoms, UrgentCare2Go brings medical evaluation directly to you. Book your mobile visit: https://urgentcare2go.com