Kennel cough worse after vet check

Ni

Our old dog has always had kennel cough issues since we adopted her a few years ago. Just last week she had her annual checkup and shots and ever since then her cough has been way more frequent. It feels like she is CONSTANTLY coughing and it's driving us insane. We plan to call the vet tomorrow when they are open but does anyone have any advice in the meantime?