Hi Mcgratht, and thanks for this excellent question. An exacerbation, in the most general of terms, is considered to be an sudden worsening of COPD symptoms that requires treatment.
I thought this article, which focuses on this very topic, would provide you with some additional insight for your concern: https://copd.net/basics/acute-exacerbations/. I do hope you find it is helpful to read.
Depending on the details of the symptoms you are describing, you may want to discuss this further with your physician. What do you think?
Wishing you well,
Leon (site moderator COPD.net)