Ovulation test paper detects luteinizing hormone in urine, 24-48 hours before ovulation, using ovulation test paper to detect urine around 10 am, there will be a strong positive result, after ovulation and then use ovulation test paper to detect a weak positive result, so you will see a deep and a light situation, which is clinically a normal phenomenon. The purpose of using ovulation test paper is to understand the time of ovulation, in the clinical reasonable arrangement of sexual life, will improve the chances of pregnancy. Therefore, if you have intercourse 24 hours after the ovulation test, your chances of getting pregnant will be increased, and it is recommended that you pay attention to hygiene during intercourse to avoid causing inflammation of the reproductive tract.