Glad to hear you are being carefully followed. When my daughter got TB (nurse in county jail) her clear mucus continued for nearly a year after the original colored phlegm cleared. I have constant clear mucus after 1.5 years of treatment for NTM - pulmonology nurse says it may be with me "for a long time" - and that clearing it is key to staying healthy - TB and NTM love to grow in it if it thickens and stays in the lung.
Sue