The presence of increased leucorrhea cannot determine if fertilization of the egg has failed. The presence of increased leucorrhea may indicate successful fertilization of the fertilized egg. If the leucorrhea is increased and smells bad, along with itching of the vulva, it may be caused by vaginal inflammation. If the leucorrhea is increased and there is a small amount of vaginal bleeding during intercourse, it may be caused by cervical inflammation. If you want to check if you are pregnant, you can’t judge by the changes in the leukorrhea alone. You can go to the hospital for a blood test for chorionic gonadotropin about 10 days after intercourse, or you can test your urine with an early pregnancy test or a pregnancy test about two weeks after intercourse, and these two tests can determine if you are pregnant.