Natural cycle IVF - follicle growth question

[koj518]

Hi all,

After a successful fresh IVF cycle in 2018, I am back for another journey in hopes for baby #2.

I have 2 frozen embies and I have opted to do a natural thaw cycle as I have fairly regular cycles. However, after a good scan on CD9 (9mm embryo on right side and 10mm on left side), my left embryo decided to shrink and my right embryo was only 11.5mm today (CD12). I go back for another scan on CD14 in hopes that I can trigger soon but 11.5mm on CD12 seems too small for my cycle length (28 days). Has anyone experienced something similar? Is this a sign that this cycle may be a flop?

Thanks in advance!!

 

[koj518]

Updating incase anyone comes across this post in the future.
At CD14, my uterine lining had grown by 3mm (from 55m to 8mm) and my dominant follicle went from 11.5 to 13.5. The doctor thinks I should be ready (ie, follicle at 16mm) on CD16.