We were irresponsible and stupid enough to have sex without protection. Although I pulled out completely before ejaculate but we still took plan B within 1 hour later. We have taken 3 pregnancy test 14, 17, 21 days after the incident and all of them were negative, and she does not experience any pregnancy symptoms at all. Are we safe from pregnancy ? I heard that the test must be taken one week late or sth like that. We had unprotected sex on her CD9.