A strong positive ovulation test after pregnancy is a relatively common phenomenon, because ovulation test is to detect the concentration of luteinizing hormone in a woman’s urine, and the structure of chorionic gonadotropin and luteinizing hormone after pregnancy is very similar, so it is a normal phenomenon to have a strong positive test with ovulation test. Therefore, sometimes it is not always accurate to test for pregnancy with ovulation test paper after pregnancy because many hormones are similar and therefore can interfere with each other. It is best to go to the hospital to check the chorionic gonadotropin in the blood, and if it appears to be elevated, you are sure that you are pregnant.