Day 3 vs Day 5
Day 5 fertilized eggs (previously called embryos, now called blastocysts, or blasts) is our aim. If an egg has fertilized and made it that far, the chances of a successful pregnancy are significantly higher. The challenge to make eggs survive to day 5 is a lab challenge. So, if we have a good lab, and we are able to grow the embryos successfully to day 5, we aim at that for sure. If the embryos make it till day 5, this is a natural selection of the best embryos. You do not want to transfer an embryo (eg at day 3) that you do not think can survive till day 5.
Our practice is to aim at day 5 transfer.
Fresh or Frozen transfer
A very common debate topic. There is this trend in thinking that ‘natural is better’ therefore ‘fresh’ is better. The problem is, what we do to get the eggs out is ‘very’ unnatural. We give you so many medications, hormones, etc. that your body is not at its best to accept a baby. The lining of the uterus, the receptivity, the capacity to carry the baby are all affected, based on the protocol used for induction of ovulation.
We prefer to “freeze all.”
When the effects of the hormones of induction are over, we start a new ‘Frozen Embryo Transfer ‘ cycle, and get your uterus to become receptive and accept the transferred embryo.
How many Embryos do we transfer?
We usually transfer one (mandated by the government if they pay for the cycle). Rarely, we may transfer two. Our main aim is to try to prevent twins as a twin pregnancy may have its risk on mother and babies, including risks of prematurity.