After 14 days of IVF, if you can’t get a positive result on the pregnancy test, it is unlikely to be successful, but it is advisable to take a blood test to check for human chorionic gonadotropin (HCG). In general, after 14 days of IVF transplantation, you can use pregnancy test paper or pregnancy stick to test the morning urine to determine whether the transplantation has been successful. 14 days if you can’t get a positive result, it means that the transplantation is unlikely to be successful. However, pregnancy test strips or pregnancy tests are not 100% accurate, and sometimes there may be false negative results. Therefore, if you can’t get a positive result, you can’t rule out pregnancy completely. It’s best to go to the hospital for a blood test for human chorionic gonadotropin (HCG), which is one of the most sensitive ways to determine early pregnancy. If the blood test for human chorionic gonadotropin is significantly elevated, it means that the implantation has been successful and the pregnancy test or pregnancy test has a false negative result. If the human chorionic gonadotropin blood test is at the same level as in the case of non-pregnancy, it is certain that the implantation has failed.