Hi, I had chest infection last month beginning of jan.and was on 2 course of oral AB.and again last week i have another chest infection + flu this time and on another course of different oral AB.I have wheeze at night and first thing in the morning,everytime i cough i have a nasty metallic taste of phlegm which makes me sick sometimes.i have this bad taste even before i took AB. Is there any respiratory disorder that causes it aside from a simple chest infection??should i need a chest xray ??so concern about this because 2 episodes in a space of 4 weeks.