Took an ipill right after intercourse even though there was no ejaculation. I have an abdominal+pelvis ultrasound scan on 9th July morning (2-3days later) to test for potential presence of PCOS. Can the test detect sperm? Will it show 2-3days later too? Till how many days of being in my system can a scan still detect sperm? I do not want it to show, how do i avoid it? Or how forward will i need to push my appointment for the same?