If their success rate is that low, absolutely. More though is a scary risk.
I don't think btw anyone could take offense over your worries for a twin pregnancy - we've had some twin pregnancies end very sadly on the pink board and others (like mine) that ended in micropreemie births and months in the hospital. Better to not court twins or more though at CNY I think the risk of twins from transferring two cannot be too high.
This message has been edited by Blessed_Thistle on Apr 30, 2012 9:19 AM