Many infertility patients do not know much about ovulation, and many of them know about ovulation, but they are not very clear about how to have intercourse during ovulation. Some of them are worried that the quality and quantity of sperm will decrease if they have intercourse too often, and they are also worried that if they do not have enough intercourse, the eggs may not have a chance. How to determine ovulation The menstrual cycle begins on the first day of menstruation. The average menstrual cycle is 28-30 days, but it varies from person to person. 5 days early or late is normal. 1. Menstrual cycle projection method Ovulation usually occurs in the middle of the menstrual cycle, about 14 days before the next period. The egg can survive for about 24 hours. Ovulation is affected by the environment, emotions, health condition, sex life, medications, etc. Ovulation can sometimes be early or delayed. This method is not suitable for patients with irregular menstrual cycles. 2.Basal body temperature detection method The basal body temperature rises after ovulation. Measure the sublingual body temperature for 5 minutes in the morning before you wake up and do any activity. The body temperature before ovulation continues to be around 36.5℃, fluctuating within 0.1℃. If the temperature the next day is 0.3-0.4℃ lower than the previous day, it indicates the arrival of ovulation day. The body temperature rises about 0.2-0.4℃ soon after ovulation, that is, it enters the luteal phase. If the basal body temperature rises for more than 14 days in a row, you should consider whether you are pregnant. If the basal body temperature rises for less than 12 days, you should consider whether the luteal function is insufficient. This basal body temperature measurement method has its drawbacks and errors, and it is not convenient to use. 3.Cervical mucus examination method It is generally believed that the cervical mucus on the day of ovulation is clear and transparent, egg-white in shape, with a drawing degree of more than 250px. After ovulation, the amount of cervical secretion gradually decreases and turns turbid and thick. 4.Urine LH test method After the follicle grows and matures, high estrogen level will induce the production of luteinizing hormone (LH for short), which induces ovulation. The blood LH peak usually appears in the early morning and the urinary LH peak is 6-8 hours later than that in the blood. Therefore, urine LH should be tested after 2 pm and before 7-8 pm. If a strong positive test is detected, it indicates that ovulation is imminent. Ovulation usually occurs within 24-48 hours of a strong positive test, when intercourse on 2 consecutive days is associated with a high pregnancy rate. However, the duration of the urinary LH peak is short, only about 24 hours, and can only be detected before ovulation. 5.B ultrasound It is more accurate to use negative ultrasound to observe the development of follicles to determine the ovulation period. How to have intercourse during ovulation If the approximate ovulation period is determined, it is time to master the skills of having intercourse during ovulation. First of all, the survival time of the egg is 24 hours, but the fertilization ability decreases greatly after 6-8 hours of discharge, while the sperm can survive in the female reproductive tract for about 3 days, therefore, be sure to have intercourse about 1 day before ovulation, on the day of ovulation. This will greatly increase the probability of conception. However, since ovulation is affected by emotions and moods, ovulation can occur earlier or later. Therefore, it is recommended to have intercourse on alternate days around 7 days before ovulation, which is safer, but of course, if the male partner is more physically active, daily intercourse may not be out of the question. It varies from person to person. In addition, the sexual physiological characteristics of the male partner should be taken into account. Many patients complained in the clinic that if the female partner told them that they ovulated today and asked to have intercourse, many of them would have nervous erectile dysfunction and could not complete intercourse, thus wasting the opportunity to ovulate. At this time, medication such as Viagra can be used as an adjunct to treatment. In general, for normal couples, the chance of natural pregnancy is about 10-20% per menstrual cycle. After 3-6 cycles of intercourse after accurate determination of ovulation and still no pregnancy, you are advised to visit a reproductive medicine center as soon as possible for further tests to rule out other etiological causes. However, pregnancy is a very random thing, generally we say that you are given the opportunity to have regular intercourse 12 times a year, but still can not get pregnant, then, for the male partner, to visit the male clinic to check the sperm, to see if it is weak sperm, if the examination during the preparation for pregnancy is more “rainy day”, to improve the probability of conception. At the same time, improve the bad habits of life, and then with the application of some sperm production and sperm drugs, and strive to get a baby soon.