Women engaging in sexual activity during ovulation and increasing the frequency of intercourse can effectively increase the chances of pregnancy. So, how can we know when a woman's ovulation period is? There are several practical methods below:
1. Menstrual cycle calculation method
Ovulation usually occurs in the middle of the menstrual cycle, around 14 days before the next menstrual period. Eggs can survive for about 24 hours, and ovulation can sometimes be advanced or delayed due to factors such as environment, emotions, health status, sexual activity, medication, etc. This method is not suitable for patients with irregular menstrual cycles. The calculation method is as follows:
The first day of ovulation is equal to the shortest menstrual cycle minus 18 days,
The last day of ovulation=the longest menstrual cycle minus 11 days.
For example, if the shortest menstrual period is 28 days and the longest is 37 days, the shortest regular period needs to be subtracted by 18 (28-18=10) and the longest regular period needs to be subtracted by 11 (37-11=26). Therefore, from the 10th to the 26th day after the menstrual period, it belongs to the ovulation period.
2. Basal body temperature detection method
The basal body temperature increases after ovulation. Measure the sublingual temperature for 5 minutes before waking up in the morning and engaging in any activities. The body temperature before ovulation continues to be around 36.5 ℃, fluctuating within 0.1 ℃. If the body temperature is 0.3-0.4 ℃ lower than the previous day, it indicates the arrival of ovulation.
After ovulation, the body temperature quickly increases by about 0.2-0.4 ℃, entering the luteal phase. If the basal body temperature continues to rise for more than 14 days, pregnancy should be considered. If the basal body temperature rises for less than 12 days, it should be considered whether there is luteal insufficiency. This basal body temperature measurement method has its drawbacks and errors, and it is inconvenient to use.
3. Cervical mucus examination method
It is generally believed that cervical mucus on ovulation day is clear and transparent, in the shape of egg white, with a fineness of over 250px. After ovulation, the amount of cervical secretions gradually decreases and becomes cloudy and thick.
4. Urine LH test strip detection method
After follicle growth and maturation, high levels of estrogen can induce the production of luteinizing hormone (LH) in the blood, leading to ovulation. The LH peak in blood usually appears in the morning, and the LH peak in urine is 6-8 hours later than that in blood. Therefore, urine LH testing should be done after 2 pm and before 7-8 pm. If a strong positive result is detected, it indicates that ovulation is about to occur. Ovulation usually occurs within 24-48 hours of a strong positive result, during which sexual intercourse lasts for 2 consecutive days and the pregnancy rate is high. However, the duration of urinary LH peak is relatively short, only around 24 hours, and can only be detected before ovulation.
