Chest is sore and that theres something that needs to be coughed up but nothing there and no overt cough or temperature. no difficulty breathing no other symptoms. only local travel via air 1 week ago. do i need to be worried about covid-19?

Possible: The most common symptoms from COVID include the following: Fever, Dry Cough and SOB. Given no fever, I think general precautions are all that is needed. Follow the following: https://www.healthtap.com/blog/covid-19-care-guidelines/preventing-covid-19, and if fever do the following: https://www.healthtap.com/blog/covid-19-care-guidelines/self-quarantine-guide

Symptoms: COVID 19 Sx's may include fever, cough, feeling tired, shortness of breath, muscle aches, headache, sore throat, chills, chest pain, nasal congestion, loss of taste or smell, nausea, vomiting, diarrhea. Your symptoms could be from a variety of causes - possibly COVID 19. A telemedicine assessment may help to clarify if COVID 19 testing is needed.

See below: Covid-19: https://www.cdc.gov/coronavirus/2019-ncov/index.html Please contact your doctor by phone for further evaluation and mechanism for testing in your area. Wear a mask, stay away from others, practice hand hygiene. Be sure to get tested, if you get symptoms. If you develop breathing difficulty, go to the nearest hospital, immediately. Wish you good health.