How long should cold and flu symptoms really last — and when should you get help?

As it seems everyone is fighting off some kind of sickness, medical experts have advised when you should see a doctor.

New York City is one of a handful of hot spots for respiratory illnesses this month, the Centers for Disease Control and Prevention reports.

All of the hotspots had either high or very high concentrations of COVID-19, respiratory syncytial virus or influenza — aka “the tripledemic.”

Symptoms of a regular cold tend to spike within the first few days of a person being sick, although certain symptoms, such as a runny nose or consistent cough, can last up to 14 days, according to the CDC.

However, symptoms of influenza, RSV, the coronavirus and other viruses typically last seven days — but could continue for as long as two weeks.

People who have pre-existing conditions such as asthma may experience symptoms for a long time, leaving some curious as to when their cough means they should schedule an appointment at the doctor’s office.

Dr. Lena Wen told CNN that those who have suffered through symptoms for longer than two weeks without feeling any better should see a medical professional.

People experiencing shortness of breath, chest pain and an inability to retain fluids should check in with a doctor as soon as possible.

In addition, those at the extremes of ages — newborns and elderly individuals — and those with underlying medical conditions are at a higher risk of developing severe symptoms and should seek medical care sooner than the average individual. Indeed, hospitalization rates are the highest among young children and senior citizens.

Wen also warned that a viral infection could develop into a bacterial infection if untreated.

She also noted that the symptoms could be a sign of another condition, which medical attention would help suss out.

Although there are several general markers to indicate when someone should see a doctor, Wen encourages everyone to stay attuned to their bodies and seek medical help when they feel they should.

“The preventive things are all the same — you know, stay home if you’re sick, wash your hands, cough into your sleeve, don’t rub your eyes, nose and mouth, get up to date on the vaccinations,” Dr. Philip Huang, director of Dallas County Health and Human Services in Texas, told ABC News.

In addition to a new COVID-19 booster shot that’s arriving in pharmacies and doctors’ offices now, there are also two FDA-approved vaccines for RSV available for adults, one of which is also approved for pregnant women to shield their newborns from RSV.

However, the urgency that led to higher vaccination rates, and the public outreach efforts that occurred in the early days of the COVID-19 pandemic, have largely faded, giving way to complacency and “COVID fatigue” — even as people continue to die from the disease.

As such, experts are still sounding the alarm.

On Thursday, Wisconsin health officials urged pregnant women to get the new vaccine to protect newborns from RSV.

The virus has thus far killed three children and killed nearly 600 babies there this season, the Milwaukee Journal Sentinel reported.