Oracle?! Lmao @onedaymaybebaby.. I don't know everything. Otherwise there would be no need for ivf and we would all be preggers😂😂..
i understand ur concern..but u have nothing to worry about hun. The due date based on the day of transfer isn't an accurate measure of EDD. You're absolutely right.. docs rely on hcg levels initially ( up to 12-14 weeks) to monitor the growth of the embryo/fetus. After the 14week mark, hcg begins to drop and it no longer becomes a good marker of fetal growth. This is when they rely heavily on scans- and other blood markers.
You will notice throughout the pregnancy that ur EDD will change a couple of times depending on growth of baby... so don't be too worried about a 3 day difference 😊.
As long as the hcg is rising and doubling well, then its all good hun xx