IUI & Uterine Lining

J💋

I had my CD 12 scan today. I have one follicle at 20 mm and another at 15 mm. They are wanting to wait a day to trigger (tomorrow night) and <a href="https://glowing.com/glow-fertility-program">IUI</a> Thursday. She mentioned my uterine lining this cycle as of right now is 6.1-6.6. Is this bad?