I could cry reading your post. I did not have Covid thank you God, but have been slammed with RSV and was taken by ambulance to a local hospital. I have serious lung issues which have made this more difficult. Just like you I thought it was gone - cruel joke- it came back with a vengeance. I was not treated with anything at our local hospital. Because of my other lung issues my UMASS doctors literally saved me. I was on cough syrup with codeine so I could finally sleep. I was also on prednisone and doxycycline for the bronchiolitis. My journey with RSV has been long - since around 10/18. The worst was around the end of the month but then again another “worst” in November ( middle). I have to use a prescription nebulizer twice daily now as well. I get violent morning headaches which come and go throughout the day. Excedrin is my best friend! I have had serious neck pain as well. I pray it will all go away, and I will wake up with only aspergillosis and MAC. As far as the yucky colored phlegm it could be from that pill or old blood . If it happens again call your doctor. I pray you will feel better soon. I am so sorry you contracted RSV. I wouldn’t wish this on anyone especially the elderly. Irene5