First, the menstrual cycle table projection method Ovulation occurs roughly between 12-16 days before the next menstrual period, plus the sperm can survive in the female body from two hours to eight days, the egg can survive 12-24 hours, the conception period should be in the next menstrual period before the 9-19 days. Second, the basal body temperature method The basal body temperature rises when the egg is ovulated, and it will be maintained for about 14 days. This rise in body temperature is due to the secretion of luteinizing hormone by the follicles after ovulation, which has a thermogenic effect and can raise the body temperature to promote the implantation of the fertilized egg. The first step is to prepare a special basal body temperature thermometer with a rounded tip (available at all pharmacies) with a minimum scale of 0.05. Take the temperature under the tongue (the current basal body temperature) for 5 minutes in the early morning, before waking up from sleep and before any activity. Before ovulation, the body temperature stays around 36.5 and fluctuates within 0.1, which is the hypothermic phase, also known as the follicular phase; in the morning of the day when the hypothermic phase ends, the temperature will be 0.3-0.4 lower than that of the previous day. This is the day of ovulation, after ovulation, the body temperature will soon rise about 0.3-0.5, into the high temperature period, that is, the luteal phase. This high temperature will last about 14 days. Third, by the secretion of the presumption of ovulation Women before ovulation, estrogen will make the cervical mucus secretion increase, change the vaginal pH, in order to facilitate the survival of sperm and movement. So before ovulation cervical mucus begins to appear in trace amounts, clear and transparent without much stickiness. On the day of ovulation, the mucus is the most abundant, clear and spreading like water, and the vagina and vulva are moist and sticky. It is generally believed that the day when the secretion is clear and transparent like egg white, with the longest pulling degree is likely to be the day of ovulation, and 3 days before and after this day is the ovulation period. After ovulation, the amount gradually decreases and becomes cloudy and thick. A few days after menstruation, female hormones are at their lowest, the amount of cervical mucus is low, and the vagina and vulva return to dryness. You can determine the day of ovulation by wiping the vulva with clean, white toilet paper, noting the mucus on the paper, and training yourself to judge the degree of wetness of the vulva and keep a detailed record. Observe the cervical mucus several times a day, generally can use the opportunity to get up, before taking a bath or before urinating with a finger from the vaginal opening to take mucus check, observe the appearance of the mucus on the finger, the consistency of the mucus as well as the finger to do the reaction of pulling and other aspects of the examination. Fourth, the relationship between mid-term pain and ovulation In the middle of two menstrual periods, some women may feel pain in the lower abdomen, which is called “mid-term pain”. This is called “midterm pain”. Midterm pain is the pain caused by the ovum being discharged from the ovary. This is why midterm pain has attracted a lot of attention as one of the signs of ovulation. Mid-cycle pain usually occurs 2-3 hours before ovulation, and in some cases may feel like cramping or cramping. Sensitive people can feel it the day before ovulation. Mid-cycle pain is characterized by pain that intensifies during the period of ovulation, with peaks of pain lasting 30 minutes to 3 hours, and is almost always located in the lower right abdomen, with some people alternating between left and right lower abdominal pain each month, or pain near the upper part of the pubic bone, which can sometimes be mistaken for appendicitis. Mid-cycle pain is not easily noticed, but most people can feel it if they pay attention. If the mid-term pain and basal body temperature method is well combined together, it can be more accurate to grasp the day of ovulation. Fifth, ultrasonic examination method is also known as vaginal ultrasound to detect ovulation: at present, major hospitals in China use vaginal ultrasound to observe the size of the ovary, determine the size of the follicle, and presume that the ovulation period is when. The follicle is usually about 2-3 millimeters, and will gradually increase in size near the day of ovulation, reaching 18 millimeters two days before the day of ovulation, and will increase to more than 20 millimeters on the day of ovulation. If the day of observation coincides with the day of ovulation, sometimes the follicle can even be seen to rupture on ultrasound. As you can see, utilizing a negative ultrasound to detect ovulation is the most direct and accurate method. First, you can use the menstrual cycle method to predict an approximate date of ovulation, perform a follicle measurement on a day close to the day of ovulation, observe the size of the follicle, and turn to your doctor for guidance. If the follicle has just formed or is still small, you can perform ultrasounds every 2 days to monitor the rate of follicle enlargement. When the follicle is close to maturity, about 16 millimeters, you can test it every day, or even twice a day, until the follicle matures. After the follicle has ruptured and discharged the egg, ultrasound can detect a small amount of tuck in the pelvis, confirming successful ovulation. If you can cooperate with the basal body temperature table, secretion viscosity test and mid-term pain method, basically can be very accurate to determine the day of ovulation, so your chances of conception will be greatly increased. Six, ovulation test paper Remember! Can not use morning urine test, the best in the afternoon around 4, 5 o’clock test, test before 2 hours try not to drink water and go to pee! Until the ovulation paper measured weak neutral, you should from now on every three or four hours to measure, and so measured to the bottom of the line is obviously deeper than the line above the strong Yang, is about to ovulate, but there is still a period of time from ovulation, 24-48 hours, you found a strong Yang 12 hours after the coitus with LG can be once, and then give him a rest. Then you can continue to test every three hours, you have to estimate the time accurately, calculate if it has been 24 hours since you detected a strong positive, you may be about to ovulate, you will find that the second line of the test is fading fast, once you find that the line is fading, that is the time when you have already ovulated, at this time you have to seize the time to have intercourse again. After intercourse, you can continue to test again, within 12 hours the color may be very light and faint, you and LG can rest and wait for the result! Don’t waste your LG’s bullets ahead of time, that way there may not be enough of them by the end of the day, and it’s not good for your LG to be too tired. Remember, the main thing is to catch the two time points after 12 hours of strong positive and the 5 hours when the strong positive turns weak.