Hello, I'm new to this site. Last Monday I went to dr because I had a bad fever and what seemed to be the start of a bad chest infection. Didn't feel great at all. He said I had lung infection and gave me Doxycycline for a week. Got worse over the next two days and brought up phlegm after prolonged coughing bouts.Temp is down now for 3 or 4 days and I'm feeling a lot better though not much appetite. I still cough intermittently during day and I can hear my lungs sort of inflating. I'm so scared theres something really wrong.Is this normal and how long is the cough likely to last? Thank you in advance anyone who may help.