On days 0-3 the embryo is growing in the petri dish and at 3 days it is placed inside the uterus. Once inside the uterus if the embryo is going to turn into a pregnancy the following is happening with roughly this timeline:
Wednesday 10/27…Embryo is growing and developing
Thursday 10/28… Embryo is now a blastocyst
Friday 10/29…Blastocyst hatches out of shell on this day
Saturday 10/30… Blastocyst attaches to a site on the uterine lining
Sunday 10/31.. Implantation begins as the blastocyst begins to bury in the lining
Monday 11/1… Implantation process continues and blastocyte is now a morula and buries deeper in the lining
Tuesday 11/2… Morula is completely implanted in the lining and has placenta cells & fetal cells
Wednesday 11/3…Placenta cells begin to secrete hCG in the blood
Thursday 11/4…More hCG is produced as fetus develops (home pregnancy test may be faint +)
Friday 11/5…More hCG is produced as fetus develops (home pregnancy test may be faint +)
Saturday 11/6…hCG levels are now high enough to be immediately detected on a home pregnancy test.
If I am pregnant from this IVF cycle then without a doubt I should be seeing even a faint line on a home pregnancy test by this Saturday. The above time line is based off the average day a woman implants and tests positive on a test, not off of someone who has had assisted hatching (makes implantation possible a full day earlier) and 2 embryos (double the hCG production if both have implanted).
So chances are very high that I could have tested positive as early as yesterday-although that was clearly not the case for me. Here’s to hoping that those embryo’s (now supposedly morulas) are just being average and that another line will soon be visible on these damn test strips!