So sorry to hear Klong the same has happened to me for the last 2 cycles. Every thing was perfect and it still failed. I don't think changing clinics would make much a difference.
Afm I have one embryo left as well which I have decided to use in December otherwise I have to start over again. At least I have a daughter which was conceived in my 1st ever ivf cycle so I'm blessed to have at least one child even though a brother or sister for her would be nice.