I generally do get the flu leading to severe bronchitis. should i be concerned with covid-19?

Yes: Practice common sense by avoiding crowds, washing hands for 20 seconds after handling objects touched by others Work from home if possible. Don't stand or sit next to people closer than 6 feet. Avoid anyone who is ill or has been in an endemic region. Keep hydrated. Use zinc lozenges at first sign of sore throat. If you are currently having asthmatic bronchitis get treated promptly,appropriately.

COVID is possible: Symptoms of COVID 19 infection may include (but aren’t limited to) dry cough, shortness of breath, nasal congestion, fever, headache, sore throat, feeling tired, loss of sense of taste/smell, decreased appetite, nausea, diarrhea, vomiting, chills without or without shaking & muscle aches REF: https://www.cdc.gov/coronavirus/2019-ncov/symptoms-testing/symptoms.html