When is the most accurate time for an early pregnancy test strip?

Patient's question:

Please ask the doctor, how many days after pregnancy is the earliest that a pregnancy test kit can detect? When pressing the chest a bit hurts, how long has it been pregnant approximately? Can the test kit detect pregnancy at this time? Thank you

Doctor's answer:

Early pregnancy test paper detects pregnancy time
Generally, pregnancy can be detected around 3-5 days after the menstrual period with an early pregnancy test paper. If the test paper shows two red lines, it means pregnancy has occurred; otherwise, it means pregnancy has not occurred.