Cervical Mucus Method
This method depends on the observation of changes in the consistency and the volume of cervical mucus in relation to the ovulation. On feeling the cervical mucus in the vagina by fingers the dry days and the wet days are recognized by the women. The wet days are the fertile days.
The number of wet days are about 10 days in 28 day cycle. Wet days start with sticky white mucus for 2-3 days following 2-3 days dry days after menses. Sticky white mucus days is followed by clear slippery profuse mucus for 3-5 days (this slippery mucus is capable of being stretched between two fingers) . The last day is called the peak day. Following peak day there is sticky mucus for 3 days. This the end of fertile period.
Many women are unable to observe these symptoms and thus the Pregnancy failure rate is as high as 22 per 100 women year.