You cannot test out of Quarantine!
If you were in contact with someone who discovers that they have Covid-19 and may have had it at the time that you came in contact with them, and even though you may have gotten a negative Covid-19 test result you could still have Covid-19 and be a carrier!
It is a good idea to get tested after Day-3 or if you have any symptoms!
If you were exposed to Covid-19 it can take up to 3-days before you could produce a positive Covid-19 test result. It can take up to 14-days before any symptoms of Covid-19 show up. Most cases result in recovery after only 3-5 Days up to 2-Weeks. More serious cases of Covid-19 requiring hospitalization are usually resolved within 25-days resulting in either recovery or death.
At greatest risk are people over 65 years old, and people with pre-existing health conditions including high blood pressure, heart or lung disease, or diabetes, etc.
During the time from infection to recovery someone can still be contagious!