Is infection there? Pft was also normal!

So i had k. pneumoniae last month found in my sputum culture without any symptoms apart from cough with phlegm, it ws also sensitive to all the antibiotics. Right now my symptoms have resolved greatly, but many a time i have to clear my throat due to phlegm in throat(not cough anymore), but i do cough sometimes and lot of phlegm comes up, and sometimes very small thick mucus comes up in mouth(probably from post nasal drip), like the one shown in the picture..I didn't have covid, apart from that i have upper rib pain sometimes (its not tender to touch but when I squeeze my chest it feels like a little painful, only upper left right and middle ribs), also i have running nose.. My chest xray was clear..pft was also normal