A very light double bar on a pregnancy test on day 9 of transplantation can be caused by pregnancy, but it can also be triggered by injections of human chorionic gonadotropin.
If a woman gets a very light double bar on the pregnancy test on day 9 of the transplant, it may be caused by pregnancy. Because the human chorionic gonadotropin in the body will continue to rise after pregnancy, so it will be detected as a very light double bar. You can take a pregnancy test again around the 14th~15th day after the transplantation, or go to the hospital for a blood test of HCG to find out whether you are pregnant or not.
If human chorionic gonadotropin was injected before the transplantation to promote ovulation, the drug may not be fully metabolized in the body on the 9th day of the transplantation, which will affect the effect of the test paper when it is used to detect the pregnancy, resulting in a false-positive situation, leading to the appearance of a very shallow double bar.
When the above situation occurs, it is recommended to go to the hospital in time to improve the examination, to clarify which cause is triggered.