Yeah the hcg should be out of your system by 10 days post EC, flowermal and everhopeful maybe this might help give you an idea of where you at.
What Happens After an Embryo Transfer?
Once you complete your embryo transfer, you will have approximately 1½ weeks to wait before a pregnancy can be detected. The following tables outline an approximate timeline for what happens during a successful pregnancy after a 3-day transfer (3dt) and a 5-day transfer (5dt).
3-Day Transfer
One
The embryo continues to grow and develop, turning from a 6-8 cell embryo into a morula
Two
The cells of the morula continue to divide, developing into a blastocyst
Three
The blastocyst begins to hatch out of its shell
Four
The blastocyst continues to hatch out of its shell and begins to attach itself to the uterus
Five
The blastocyst attaches deeper into the uterine lining, beginning implantation
Six
Implantation continues
Seven
Implantation is complete, cells that will eventually become the placenta and fetus have begun to develop
Eight
Human chorionic gonadotropin (hCG) starts to enter the blood stream
Nine
Fetal development continues and hCG continues to be secreted
Ten
Fetal development continues and hCG continues to be secreted**
Eleven
Levels of hCG are now high enough to detect a pregnancy
5-Day Transfer
One
The blastocyst begins to hatch out of its shell
Two
The blastocyst continues to hatch out of its shell and begins to attach itself to the uterus
Three
The blastocyst attaches deeper into the uterine lining, beginning implantation
Four
Implantation continues
Five
Implantation is complete, cells that will eventually become the placenta and fetus have begun to develop
Six
Human chorionic gonadotropin (hCG) starts to enter the blood stream
Seven
Fetal development continues and hCG continues to be secreted
Eight
Fetal development continues and hCG continues to be secreted
Nine
Levels of hCG are now high enough to detect a pregnancy