Been there too and i have a history of primary complex when I was a teenager. Xrays from previous company I worked with showed past scar. Pulmonologist from reputable hospital gave me clearance. When its time for me to have my medical at SLEC I have to repeat everything. Prayers were my powerful weapon. I am hoping for a negative culture. After Christmas, almost the end of my sputum culture, I called SLEC and result came back negative. My prayers were granted. It was a good Christmas gift for me. I am seeing the hassles if in case my sputum will be positive, I will be going to SLEC everyday just to take my meds. But I am also comfortable with the fact that if im positive, treatment will be given right away. You will be fine. Your sputum culture will return negative and you will be flying soon.