2 year old constantly getting winded

It's not really shit. It's not possible to administer a Pulmonary Function Test to a child of this age and that is usually how the diagnosis of asthma is made. Rather, with a child of this age, it's more of a guessing game, adding to, or taking away type of thing. They can watch her, they can listen to her lungs, they can use a Pulse Ox to make sure she is getting adequate oxygenation. It's highly doubtful that you were every at a Dr. or hospital without them doing all these things IF they suspected this child has breathing issues. Breathing issues are a main priority in any standard facility.

You can take her to ER if you suspect she is becoming short of breath... immediately. Ask what her oxygenation saturation is, ask if lungs are clear.

When you suspect her being SOB, is her lips blue? These are all things you need to familiarize yourself with.

See a different doctor. Have they taken chest x rays? Lingering pneumonia?

Maybe look for another doctor if possible. Hope they find what is wrong with her soon

You have been given great answers. I'd recommend a pediatric pulmonologist if there is one in your area.

I don't think they actually diagnose asthma that young... going with what m-avi said here

Some heart problems can cause those same effects - I'd get another opinion/ask for a referral to a ped pulmonologist and ped cardiologist.

The symptoms do sound Asthmatic, but it could be a number of other things, I have had Asthma since I was 2. I dont know about there but here in Australia these days they dont like to diagnose children with Asthma till around 4-5, my nephew had Asthma like symptoms between 2-3,his symptoms were quite bad and often,but the Dr's would not diagnose him because of his age,he was on the medicines etc he is now 4 and has no symptoms, theresfore chances are its not and never was Asthma. Sounds to me like the Dr is doing the right thing by being thorough and not just jumping to conclusions, I get more annoyed with Dr's that do the opposite and just throw out a label right away without all the facts, but you can always get a second opinion, and just watch for emergency symptoms, as obviously there is something Pulmonary going on right now.

My daughter was diagnosed with asthma a month or so ago, at the age of four and a half. She's had symptoms for well over a year, but the pediatrician wouldn't call it asthma before the age of four, even though I have asthma, and my dad and a number of his siblings also have it. She called it asthma-like symptoms, because some kids grow out of it, and some aren't truly asthmatic, but there may be other issues going on. My daughter was started on a nebulizer, then on a rescue inhaler and also a daily inhaler to reduce the irritation in her lungs. She has improved radically on Flovent. If you haven't seen symptom relief, ask for different medications. There are a lot out there. A short course of oral steroids might be prescribed, or more nebulizing sessions per day. Ask if an asthma care specialist is available, or an asthma nurse who works with your pediatrician. Make them take your daughter's symptoms seriously.