Hello As you mentioned that you are having so many serious medical conditions . Now ,you are also having wheezing , phlegm , cough ( deep ) on the left side ( according to you ), all these symptoms may be due to these possibilities , these include; 1 Pleural effusion in the left lower lobe of lung . Although you mentioned that this problem is new one but you are also having so many serious medical condition. As I have noted in my many patient that in serious medical condition fluid accumulated in lungs and this is very common. Diagnosis can be confirmed by X ray chest. 2 Wheezing may be due to bronchoconstriction added with infection . Physical examination reveal the condition. As sometimes allergy to any drug may produces such symptoms . Even allergy to dust , mite , pollen ,mold may produces such symptoms. 3 Congestive hear failure , also produces such symptoms . There are so many other causes of such symptoms like bronchiectais etc but I recommend you visit a pulmonologist and get his opinion. Good luck.