Just an update...have been in an IUI cycle now and had my transfer a week ago. Having my test next week. I also talked to my FS and she assured me that all the implantation tests had been done. She also said I'd only be allowed to do one IUI cycle because the chance of success is so much lower than IVF. If I'm to go back to IVF the next step will be to introduce Clexane and steroids. Not looking forward to that, so I better have a BFP next week!