the same thing myself. It is odd that my lining just stopped budging. I sometimes have better lining on a natural cycle - not much thicker but at least the same. Also, this protocol that they used didn't gradually increase the estrogen, and the first time I tested my E2 it was already at 1700. So, it was like they blasted me with so much estrogen at once, I wonder if it was just too fast, too quick?
I was wondering how long you took a break? Was it three months?