Egg-White Cervical Mucous. A woman’s body prepares for ovulation by producing cervical fluid that is ideal for transporting sperm. Prior to ovulation cervical fluid is sticky, tacky or thick. This type of fluid is hostile to sperm because sperm essentially get stuck in the thick fluid and can’t make it to the egg. EWCM (egg-white cervical mucus) is thin, stretchy and looks like egg-white. It helps sperm to glide through the vagina and up to the awaiting egg. Researchers have found that this type of mucus is the best indicator of high fertility. According to research at the University of North Carolina, couples who had intercourse on a day when the woman has EWCM are more likely to conceive.