Hello, what was your oxygen level? normal is 96 to 100%, they put a little meter on your fingar and it tells them you heart rate and your O2 levels. Its very good idea to get x-rays, yearly if you feel un-well with your lungs, stick to the same hospital, seek out an asthma specialist. Please don't feel dumb, its the doctor that should feel dumb, seek out another doctor, keep a diary of your synptoms, food, stress, weather, odditys within your body.. There are better ways to breathe than to suck in your breathe, u need to breathe thru your nose and push your belly out, its the way opera singers breathe, this allows you to breath deeper.. You need to have a spirometery test done, when you are feeling ill, and u may have an asthma attack after the test. Family doctors don;t know it all, as much as they think they do, demand to be sent to a specialist, google them in your area, go into the doctor and tell them you want to be referred to THIS doctor, (u should call and confirm that they are accepting new patients) as it does require the family doctor to forward a letter, and depending on where you are in the world you may have to pay for it.. Asthma is life threatening, if it truly is asthma your o2's will be down and your spiromertry will be down.. You may have triggers in your house that bothers you.. Do u smoke? so many things make asthma worse as u get older, so being proactive about your health is the responsible thing to do and no doctor should make u feel stupid. Do have shortness of breathe when you work out?
Stay strong seek out a pulminologist, respiratory doctors google those
Good luck god bless ww