Would a blood test 15 days post-transplant be premature

It is not too early to take a blood test 15 days after the transplant to find out if you are pregnant.
Generally around the 14th day after transplantation, you can go to the hospital to take a blood test for HCG value to determine whether you are pregnant or not. Trophoblast cells secrete HCG after successful fertilization of the transplant, and pregnancy can be determined by drawing blood to check HCG in the blood, which is generally more accurate. If the test is done too early, the HCG is not obviously elevated and may be inaccurate.
Once the HCG blood test detects pregnancy, it can be checked again the next day to see if the doubling situation is normal, pay attention to the pregnancy checkups, combined with ultrasound to understand the development of the embryo, moderate supplementation of folic acid in the early stages of pregnancy, take more rest, and avoid exertion and sexual life.