I have a 4 year old daughter from a 3 day transfer. We have done many cycles since then. A year ago, we did a 5 day transfer, which failed even though the embryos looked amazing. We recently got a BFP from a 3 day transfer. The embryos from both of our day 3 transfers did not look "amazing", whereas the day 5 ones did. You NEVER know! My doctor told me that he has seen pathetic looking embryos end in healthy pregnancies. Try to stay positive (how easy is that for me to say?!). I hope this helps. Good luck and keep us posted!!!
There are 2 ladies I can think of that are preggers from a 3 day... b74, and mariana101.
I actually got pregnant on a 2 day transfer, but unfortunately miscarried.
Good Luck on your transfer!!!