Hello again people, I am on my last day of doxycycline tomorrow and no doctors appointment has been booked. I have noticed I started coughing up a little bit of pale green sputum again today but it’s very mild. Heart rate stayed good but oxygen levels dropping again to 92 from 94 previous last to days. I also have not completely shifted the crackling sound from my upper air way especially when I lay on my back. Although in general feeling a lot better these little niggles are concerning me again, and still having coughing fits about 6-8 times a day? Is this normal and will these crackles go away in time? Or do I need to go back to see my GP?