Welcome to HCM
Your history suggest that you have LRTI that is Lower Respiratory tract
infection,which has not responded well to the antibiotics.
The pain which you had could be a Pleuritic pain with the membrane of lungs get inflamed.
There is some kind of bronchospasm
which is causing breathing difficulty.
If you are introble please get hospitalized and a Complete blood count
along with routine biochemistry like blood sugar and liver function and kidney
test along with X ray chest may be performed.
Your sputum staining and a culture can be given to know causative organism and antibiotic sutaible to treat this infecton will be helpful.
gases may be tested to know blood is properly oxygenated or not.
Hope you get well soon
Take good care
Best of luck