Can upper respiratory infection cause mild breathlessness?
It could be progressing to pneumonia. If you are extremely tired and any activity makes you short of breath, or seems to require alot of effort, then it may be turning into pneumonia, which is basically a lower respiratory infection. I have seen it knock the healthiest person down for weeks. Try to reduce any exertional activities for a few days, to rest your lungs. Realize this is hard to do as we are always using our lungs. If you don’t notice improvement in a few days, go back to the doctor and have him re-evaluate your condition. Stay hydrated, this will loosen the mucus in your lungs, so you can cough it out, try over the counter mucinex, this helps loosen the phlegm as well.
