Seemingly the chances are low, - because you are seeing light bleeding after unprotected sex. But to assure yourself - do a home pregnancy test and sometimes trauma upsets our cycle too. https://lovematters.in/hi/pregnancy/home-pregnancy-tests-dos-and-donts If you would like to join in on a further discussion on this topic, join our discussion board, "Just Ask” https://lovematters.in/en/forum