Flu Symptoms and When to Come In

Flu symptoms can range from mild discomfort to severe distress. Here are some common signs that may indicate that it’s time to get tested.

Symptoms We See

  • Fever or chills, though not everyone with flu runs a fever
  • Body aches, often severe
  • Cough
  • Sore throat
  • Headache
  • Fatigue that can last well past the other symptoms
  • Vomiting and diarrhea, more common in children than adults

Flu tends to come on suddenly. If you felt fine this morning and awful by the afternoon, it’s worth getting checked.

When to Come In

The sooner you come in, the more options we have to help. Starting an antiviral within the first 48 hours of flu symptoms gives you the best chance at a faster recovery. If you’ve been sick longer, don’t worry, we can still test and treat your symptoms.

Come in sooner if you are pregnant, over 65, have a long-term condition such as asthma, diabetes, or heart disease, or you are caring for someone who is.

When to Go to the Emergency Room

  • You have trouble breathing or shortness of breath
  • You have chest pain or pressure
  • You are confused, or hard to wake
  • You have a seizure
  • You are not urinating, or cannot keep fluids down
  • You start to improve, then get worse again with fever and a worse cough
  • In children: lips or face turning blue, ribs pulling in with each breath, or no tears when crying

If any of these symptoms describe you or your child, go directly to the emergency room.

How We Diagnose and Treat Flu

  1. Symptom review

    A provider will ask about your symptoms and when they started. Timing decides what treatment we can offer.

  2. Rapid flu swab

    A flu test will be performed with a nasal swab; results are typically ready in about 15 minutes.

  3. Treatment plan

    If your flu test is positive and you’re within the window, your provider can prescribe an antiviral. If it is not the flu, we treat what you do have.

  4. What to do at home

    Providers will offer information on symptom relief, how long you’re contagious, when you can go back to work or school, and what to do if symptoms worsen.

Flu, COVID and Strep Testing

  • Flu · about 15 min
  • COVID-19 · about 15 min
  • Strep · about 5 min

Flu, COVID, and strep often look alike at the start, so we can test for more than one in the same visit rather than sending you back a second time.

Flu or a Bad Cold, and Why Timing Matters

Comparison of flu and cold symptoms
Symptom Flu Cold
How it startsSuddenly, often within hoursGradually, over a few days
FeverCommon and often highRare or mild
Body achesCommon and can be severeMild if present
FatigueCan linger for two weeks or moreMild and short-lived
Why it mattersThere is a treatment, and it is time-limitedRest and symptom relief

Flu and cold symptoms often overlap, and a test is the only way to be sure what the best treatment option is for you.

Why the First 48 Hours Matter

Antiviral medicines work by slowing the virus down, which only helps while it is still multiplying. When started within about 48 hours of your first symptoms, they can shorten the illness and lower the chance of complications.

After the 48-hour window, we can still test and treat your symptoms, but the antiviral isn’t as effective. Stop in for a flu test today to fast-track your recovery.

Flu Treatment Cost and Insurance

We bill most insurance plans. A flu testing and treatment visit is billed as an office visit rather than a fixed product price, so what you pay depends on your plan.

Flu Testing Near You

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