Fertilization, bleeding color can be manifested as light pink, red or brown, the amount of small and no other uncomfortable symptoms, due to different personal constitution, the body’s hormone level changes produced by the normal physiological response, do not need to be too alarmed, maintain good hygiene and sanitary vulva, avoid strenuous exercise, belong to the dysfunctional uterine bleeding of a kind. It does not affect the growth and development of the embryo, and not everyone will have a similar phenomenon at the time of conception, there is no specificity, and therefore can not judge whether the fertilized egg is successful, or as a sign that you are already pregnant. If you are more than ten days after intercourse or your period is delayed for more than a week, you can use a pregnancy test on your own to see if you are pregnant, but a more accurate method is to go to the hospital and have blood drawn to test the level of human chorionic gonadotropin.