Being in an indoor environment (e.g., store, workplace, restaurant) with someone who has COVID-19 is not necessarily considered having close contact.
A close contact is someone who was within six feet for a total of at least 15 minutes in a 24 hour period of someone who has COVID-19 (48 hours prior to their onset of symptoms; for asymptomatic cases, 48 hours prior to the date they were tested).
Close contact can occur while caring for, living with, visiting, or sharing a health care waiting area or room with someone that has been diagnosed with COVID-19. Click this link for a fact sheet on being a Close Contact.
If you think you have been exposed, but do not meet the above definition of a close contact, you should continue to follow social distancing guidance, good handwashing hygiene and staying home if you become sick. Click this link for a fact sheet for people who may have been around someone with COVID-19 but are Not a Close Contact.
Any person with a fever and/or respiratory symptoms who was not tested, should stay home until at least 24 hours have passed since recovery (fever-free without the use of fever-reducing medications) and improvement in symptoms; and at least 10 days have passed since symptoms first appeared.
For anyone wishing to self-monitor their temperatures, here is a tool to help you do that.