What to Do When You Test Positive for COVID

Most people who test positive for COVID-19 have mild illness and can recover at home. The immediate priorities are straightforward: isolate yourself to protect others, manage your symptoms, and determine whether you qualify for antiviral treatment, which works best when started early. Here’s a step-by-step guide.

Isolate and Protect the People Around You

As soon as you get a positive result, separate yourself from others in your household. Stay in a specific room and use a separate bathroom if possible. Wear a mask when you need to be in shared spaces, and ask household members to do the same.

Open windows or run fans to improve airflow in your isolation space. A portable air purifier with a HEPA filter can help reduce airborne viral particles, though the EPA notes that air cleaning alone isn’t enough to prevent transmission. Even a well-built DIY air cleaner (a box fan with a furnace filter taped to it) can be comparably effective to commercial models. These work best as one layer of protection alongside masking and staying in a separate room.

Find Out if You Qualify for Antiviral Treatment

This is the most time-sensitive step. Antiviral medications need to be started within the first five days of symptoms to be effective, so contact a healthcare provider quickly, either your primary care doctor or a telehealth service. Don’t wait to see if you get worse.

Antivirals are recommended for people at higher risk of severe illness. The main risk factors include being over 65 (with risk rising substantially after 75), having multiple chronic health conditions, being immunocompromised, or not being up to date on COVID vaccinations. The most commonly prescribed option is available for adults and children 12 and older who weigh at least 88 pounds. Your provider will assess your individual risk and decide whether treatment makes sense.

Even if you’re not sure you qualify, it’s worth asking. The decision is based on your overall medical picture, not a single checkbox.

Managing Symptoms at Home

For mild to moderate illness, the basics work well. Acetaminophen or ibuprofen can bring down fever and ease body aches. Stay well hydrated, rest as much as your body asks for, and don’t try to push through fatigue. Most people start feeling better within a week, though some symptoms like cough and tiredness can linger.

Keep a thermometer handy and monitor your temperature. If you have a pulse oximeter, check your oxygen levels a few times a day, especially if you feel short of breath. A reading consistently below 95% is worth a call to your doctor.

Emergency Warning Signs

Most COVID cases stay mild, but certain symptoms require immediate emergency care:

  • Trouble breathing or shortness of breath at rest
  • Persistent pain or pressure in the chest
  • New confusion or difficulty thinking clearly
  • Inability to wake up or stay awake
  • Bluish lips or face

If you or someone you’re caring for develops any of these, call 911 or go to the emergency room. Don’t wait to see if it passes.

When You Can Leave Isolation

Current guidance says you can return to normal activities when three conditions are all met: at least three full days have passed since your symptoms started or since your positive test, you’ve been fever-free for at least 24 hours without using fever-reducing medication, and your symptoms have resolved enough that you feel well.

If you want to confirm you’re no longer infectious, use a rapid antigen test rather than a PCR. PCR tests detect viral genetic material that can remain in your body for up to 90 days after infection, long after you’ve stopped being contagious. A rapid antigen test gives a more useful snapshot of whether you’re still shedding active virus. If your antigen test is still positive, waiting another day or two and retesting is reasonable.

For the first few days after ending isolation, wearing a mask around others provides an extra layer of caution, particularly around elderly or immunocompromised people.

Easing Back Into Physical Activity

One of the most common mistakes during recovery is doing too much too soon. Even if you feel mostly better, your body needs a gradual return to exercise and physical activity. Start with light walking or gentle movement and only increase the intensity if you tolerate the previous level without setbacks.

Pay close attention to how you feel in the hours after activity. If you experience extreme physical or mental fatigue following exertion, that’s a sign called post-exertional malaise, and it means you need to scale back. Stop exercising and contact a doctor if you develop chest pain, difficulty breathing, a cold sweat, or a rapid or irregular heartbeat during activity.

If you’re still struggling to return to your previous fitness level 30 days after infection, a physical therapist experienced with post-COVID recovery can help with pacing strategies and energy conservation. This is especially important if you’re noticing symptoms of long COVID, such as persistent fatigue, brain fog, or shortness of breath that wasn’t there before your infection. In that case, check with your doctor before starting any exercise program on your own, as pushing through symptoms can sometimes make long COVID worse rather than better.