The complicated method of calculating fertile days was developed in 1925 by Austrian Hermann Hubert Knaus and his Japanese colleague Kyusak Ogin. In order for this method to be used, a woman must have her menstrual rhythm recorded for at least the last six but better for twelve months. Even then, this method is effective only if cycles are regular and long periods of sexual abstinence are respected.
The method is based on certain biological regularities, on the basis of which a woman can calculate a fertile and infertile period. It supposes that ovulation (release of the egg) occurs between 12th – 16th day of the cycle, which starts counting from the first day of menstrual bleeding, at regularly menstruating women with 28-day cycles.. If a maximum sperm life is added (then assumed for about 3 days), a woman with a regular 28-day cycle can be fertilized between 10th and 17th day of the cycle. The infertile days should be 1st – 9th day and 18th – 28th day of the cycle.
The reliability of this method is relatively low, especially for women with irregular cycles, but the method does not even refer to the so- provoked by ovulation.
Dr. Jonas’ Method requires a definition of hormonal ovulation to notify the client of the termination of hormonal and lunar ovulation terms when sexual intercourse should not occur. Compared to the calendar method, Dr. Jonas defines not 6 but up to 13 days of hormonal ovulation. The number of days has been extended to this number so that all days of hormonal ovulation are also carefully covered in women with an irregular cycle. Dr. Jonas´ Method also offers the possibility of choosing gender and calculating the child’s good vitality for women after abortion or complications during pregnancy or childbirth.
Basal Body Temperature Method – has made significant progress over the course of a decade. Technological transformation from glass thermometers to cycle cycles has brought more security and comfort, and thus greater acceptance by the public.
The importance of measured data and its representation in the fertility profile has increased. If measured continuously, it is possible to make reliable predictions about the expected ovulation and fertility phase within the cycle.
The thermal method is based on basal body temperature (BBT) changes. The fertile period lasts throughout the day that the BBT has been confirmed.
The distinction is made between:
1. Strict form – infertility occurs only after confirmation of BBT increase. The disadvantage of the method is that, in normal and even longer cycles, the so- the fertile period, the period of necessary sexual abstinence, and therefore some couples are difficult to accept. With a dynamic lifestyle influenced by a number of circumstances, it is difficult to exclude the fact that it is not a BBT increase under other circumstances than hormonal, as there is no possibility of using double control by monitoring changes in the cervical mucus.
2. Less strict form – statistical rules minus 8 or the first 5 days are used to determine the start of the infertile period at the beginning of the cycle. This method will not capture an earlier onset of ovulation, otherwise alerted to mucus symptom monitoring. The end of the breeding season is the same as the strict one.
However, this method is not suitable for women with irregular cycles. Once again, Dr. Jonas´ Method, in comparison with the BBT method, precisely and reliably defines the period of hormonal ovulation, but is not used for the purpose of the iConceive calendar primarily for conception of the child, but to alert the interruption of hormonal and lunar ovulation terms when sexual intercourse should not occur. Dr. Jonas´ Method also offers the possibility of choosing gender and calculating the child’s good vitality for women after abortion or complications during pregnancy or childbirth.
Cervical Mucus Method
The presence of this mucus can be detected in the vaginal entry, it is excreted by the uterine throat. In the days immediately after the menstruation, the mucus is thick, it is formed in a smaller amount, often it is not found between the scars. Therefore, this period is called “dry days”. When ovulation is approaching, the mucus becomes thinner, watery, highly sliding and pulling. It is released from the uterine neck in greater quantity, so it is well palpated between the cheekbones, sticks to the toilet paper and can be pulled out between the fingers up to a few centimeters. These changes are best seen just three days before ovulation and two days after and are the most fertile period throughout the menstrual cycle. Then, with the yellow body hormone, the mucus will change and dry days begin again. However, there is one complication. Occasionally, in the first half of the menstrual cycle, dry days are missing. This is especially true for women whose cycle is considerably shorter (twenty-five days or less). The first phase of the cycle is then truncated and hormonal ovulation occurs sooner.
Method of Dr. Jonas is based on a totally different principle, such as the use of hormonal ovulation. To determine the best days to be conceived, biorhythms are used to determine the fertile days of the so- lunar ovulation on which the iConceive method and calendar is based. Jonah’s method also offers the possibility of choosing gender and calculating the child’s good vitality for women after abortion or complications during pregnancy or childbirth.