A strong positive ovulation test result generally indicates that ovulation will occur within the next 24-48 hours, or in some women, a strong positive result may last up to 72 hours. Ovulation usually takes about 2 hours. If you want to get pregnant, you have a higher chance of conceiving during this time, but if you don’t want to get pregnant, you should use birth control. In any case, a strong positive result does not mean that ovulation is immediate. It is recommended to monitor closely at this time, and you can test every 4 hours. When the test result changes from strong positive to negative, it means ovulation is in progress or ovulation is over. After ovulation, the eggs can survive for 1-2 days and the quality of the eggs within 24 hours is better, so the chances of pregnancy are higher. In addition, sperm can survive in a woman’s body for 1-3 days, so having intercourse when a strong positive signal is shown is also possible for successful conception. In addition to ovulation detection by ovulation test paper, ovulation can also be monitored clinically by ultrasound. If you go to the hospital for ultrasound monitoring at 1-day intervals according to your ovulation period, you can accurately observe and determine the growth of the follicles. Another way to detect ovulation is to monitor the basal body temperature during menstruation. When the body temperature rises, it is very likely to indicate ovulation, and the possibility of conception is higher when the number of intercourse is increased appropriately within the next 2-3 days. If a woman who has intercourse experiences delayed menstruation, nausea or vomiting, or if the HCG test paper is positive, she needs to go to the hospital for ultrasound and other tests to determine if conception is successful.