What are the chances of getting twins from having 2xBlasties transfered?

[sushee]

The chances of conceiving twins on an IVF transfer compared to natural conception is about 30% better, I believe.

That doesn't mean you have a one in 3 chance of having twins. It means you're 30% more likely to have twins than someone trying naturally. I believe that the natural fraternal twin conception rate is about 1 in 60 pregnancies (but don't quote me).

So going by that statistic, if this cycle is successful, you would have just over a 1 in 20 chance of carrying twins, if my math is correct (and I was never that good at math!).

Though I have to qualify that statistic by also mentioning that twin rates vary according to age, embryo grade, clinic success rates etc. So to say 1 in 20 is actually quite arbitrary, as well.

So I guess the moral of the story is: your chances of having twins are increased by doing IVF, but you're more like NOT to have twins than to have twins.