You could take a home pregnancy test or a more accurate blood pregnancy test done by your health care provider, these could be positive as early as 12 days post conception.
However, the best day to take your pregnancy test and avoid false results is right after your menses due date.
These Q&A’s are for educational purposes and should not be relied upon as a substitute for medical advice you may receive from your physician. If you have a medical emergency, please call 911. These answers do not constitute or initiate a patient/doctor relationship.