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How does Sensiplan work?

For obtaining a pregnancy an egg and a sperm have to meet. In one cycle the egg is only released once from the ovary. It can't even be fertilized one day. The sperm cells can survive several days around ovulation in the woman's body, in which time the body temperature, cervical mucus and the cervix change very definitively.

A woman observes these bodily changes daily, notes them on a cycle chart and interprets them according to easy understandingly rules. In this way she can determine the common fertile phase and pursue or avoid a pregnancy.


Who follows the course of body temperature, the so-called basal body temperature, realizes that there are two temperature levels. Before ovulation the temperature level is somewhat lower, around the ovulation it rises noticeably. This observation makes it possible to determine the beginning of the infertile period after ovulation with certainty.

Cervical mucus

In the course of the cycle cervical glands produce mucus of different quality and in different amounts. In general, will a woman observe mucus for the first time a few days after the menstrual period.
Initially it will be tough and thick, sticky, creamy and often white. The closer the ovulation is approaching, the more fluid the cervical mucus becomes and also the more brighter, almost as egg white. At that point it has the quality for allowing sperm to move along and swim towards the egg, but also to survive a few days in the uterus and to wait for ovulation.

After ovulation the cervical mucus becomes thicker again, blocks the cervix with a prop and then becomes impenetrable to sperm cells.

Every woman can observe these events. When in the fertile phase mucus abundantly flows down the wall of the vagina, a moist or wet feeling arises. When dabbing the vagina the woman will observe the quality of the mucus, if it’s thick or liquid and what color it has, yellowish or white.


A woman can recognize her fertility at still another body sign: the change of the cervix. This ends up bullet-shaped in the vagina. Along the course of her cycle through regularly feeling, a woman can usually clearly establish the change in the location the firmness and the opening of the cervix. This self-observation is not essential, but can sometimes – as in the pre-menopause or post-partum – be an additional help.

The combination of the observation of symptoms (cervical mucus or cervix and body temperature) classifies Sensiplan under the sympto-thermal methods.