Brief Answer:
EMBRYOS ARE GOOD, DO NOT WORRY. STAY POSITIVE.
Detailed Answer:
Hello
Thanks for trusting us with your health concern.
By 72 hours ("day 3"), am embryo should have atleast 6 cells, and some preferably should have 8 cells also. Pregnancies have been reported even from 4 cell embryos on day 3, however the success rates increase with increasing cell number seen on day 3.
Embryos that possess higher number of cells which appear regular and have no fragmentation have a higher chance of
implantation than those with fewer cells , irregular cells and cells showing fragmentation.
Embryo quality as seen under a microscope provides only some parameters for judging the scope of success after
embryo transfer.There are various factors that cannot be ' seen ' or ' measured ' which contribute to quality of the embryo.
The genetic constitution or quality of the egg and sperm and hence the embryo, cannot be really assessed via the microscope that easily.
Also critical is the technique of embryo transfer.
A smooth transfer with minimum damage to the lining of the
uterus maximizes chances of implantation.
As your embryos were otherwise perfect ( Grade A and Grade B ), I would not attach much importance merely to the number of cells present.
Morever, a
blastocyst is only seen 5 - 6 days after fertilization, it is too early to be seen in your case.
The ultimate test of the ' quality ' of an embryo is the resultant
pregnancy - till then the other factors are not complete in themselves to give you an idea.
Moreover, good number of eggs were retrieved, good number were fertilized, grading was good, and transfer went smoothly - all this is a good deal in itself.
Am sure you should continue to be optimistic and stay positive (
stress and worry will only negatively impact the result ).
Bear in mind that even in the best of centres, and best of hands, and with the best of eggs, IVF only has a success rate of maximum 35 - 40 %.
So do not worry, and stay positive.
Wish you all the best.
Please feel free to ask for further clarifications.