kingdragonfly: Not good news.
A new study has been published in Nature.com.
It involves nine coronavirus cases in Germany.
It suggests that infected people can shed the virus at high levels during the first week of infection.
Yes, the peak shedding is about 2.5 days after infection, hence 2-3 before first symptoms. The typical symptoms evolve 5.2 to 5.8 days after infection. Then, 10 days after infection the thing CAN get quickly worse. This is the critical time - don't hesitate to ask for medical help when in self-quarantine.