I am sorry to hear that you've had difficulties with this as well.
Thanks for sharing your experience. So it might be an empty follicle, or perhaps needs to be a much larger follicle before triggering.
I've been trying natural cycles with TI for well over a year. It makes me wonder whether some or most of these times I might not even have been releasing an egg. Geez! I was relying on my temp shifts to indicate my ovulation, but it sounds like the egg can produce prog even if it doesn't release-- so then my question is, does it ever release? And is it bad if it doesn't release within that 36 hr trigger shot timeframe?
Cooper nurses were vague about whether they thought I would release the egg. I suppose I could only find out through another U/S.
I think my options at this point are to go with Lupron next cycle and perhaps do another phone consultation w/Dr. C.