Cervical mucus is very useful in the reproductive process: it helps guide the sperm to the egg, matures them and allows them to survive up to 5 days. This mucus is produced under the effect of estrogen. As we have seen, if conception does not take place, the endometrium suddenly retracts and eliminates the uterine lining. This is due to the appearance of progesterone, which signals to the body that it is time to eliminate it and start a new cycle. In the case of insemination, on the other hand, the levels of estrogen and progesterone totally different! Estrogen does not go down and progesterone does not appear. Cervical mucus after fertilization continues and can be extremely abundant and viscous. The white discharge we mentioned earlier continues and becomes a sign.