I'm so sorry M2C, as you know the same kind of thing happened to me on my 12th cycle TTC after my chemo was finished. I honestly thought that was our only chance and I'd blown it by losing the baby at 5 weeks, but low and behold Sidney's pregnancy came along just 4 cycles later!
If this is not your rainbow, then I bet he/she will come along very soon, you are obviously very fertile, so it shouldnt take long!
Still keeping my fingers crossed you are wrong in the meantime xxx