How long after getting tested positive for covid and before its completely cured and you cannot transmit it to others via close contact or sex?

Quarantine or retest: Many CoVid-19 tests give false positives. Deep nasal swab is most accurate so far. Kepp yourself away from everyone for 10 days if repeat is positive. You are a carrier for CoVid until tested negative. Social distance is 6 feet, but you can still infectothers at that distance. Wear a mask at all times unless alone inside or out. Obviously no sex until negative.