poscoital test spotting???? please please help!

Did anyone have spotting after the postcoital test? For those who don't know what test that is.. it's the test where they Check the cervical mucus and sperm together to see if the Soren is moving freely or not. And if my mucus is jilling yhe sperm or not. Well I passed with flying colors but the day of and the day after I had no spotting even after sex but one day after that I was spotting pink after intercourse. Has anyone experience that?