@Kristy838 - Definately don't apologise gor asking questions hun this whole ivf world is a mind field and can be so confusing. Yes this was the first pgd tested embie we have put back hopefully we will have more luck next time. I am also being treated for natural killer cells, they were detected through an endometrial biopsy. It just means some of the nk cells have been identified as being at raised levels in my uterus and it may be likely that they will attack an embryo that starts to implant so I have intralipids, use high dose clexane injections (blood thinners) and steroids (prednisone) to correct the issue. Hope that helps.
Hope this is a very lucky thread with lots of bfp's xx