The connection between cervical polyps and infertility is associated to where the polyp is placed. High up in the cervix, polyps can block the opening of the cervix and make it impossible for fertilization to occur. Also, the polyp may interfere with the production of cervical mucus. During ovulation, cervical mucus should be thin and slippery to help the sperm on its journey to fertilizing the egg. If the mucus is thick and sticky instead, it can prevent to fertilization occur.