If a weak positive result occurs on the 9th day of ovulation using ovulation test paper, it is clinically normal. Because the ovulation test paper detects the luteinizing hormone in the urine, after ovulation, the value of luteinizing hormone in the urine will decline, so if the test is repeated, a weak positive result may occur, which is normal. The vast majority of clinical ovulation tests are performed on the 12th day of menstruation, using urine at around 10:00 am. About 24-48 hours before ovulation, a strong positive result will be detected in the clinic, which means that luteinizing hormone reaches a peak, and ovulation will occur in the clinic about 24-48 hours after the peak occurs. So it is recommended that after a strong positive result on ovulation test paper, the clinic can have sex to be able to increase the chances of pregnancy. A weakly positive ovulation test on the 9th day of ovulation is normal.