Luteal phase defect

Has anyone here been diagnosed with Luteal Phase Defect? Were you able to get pregnant and carry full term?

What treatment did you receive ?

My cycles have changed, and Ive been spotting 3-5 days before periods. So it gives me around 9 days in luteal phase ... and my cycles are short, 26 days.

My obgyn put me on progesterone but I still spot at the same time, cd 21. It won’t lengthen my luteal phase.

I’ve had 2 very early miscarriages recently, and one stillborn several years ago.