CD12 Ultrasound

Judi
Had CD12 ultrasound and nurse said there are two follicles 15mm on right and 13mm on left. Now they called and told that my body is not ready yet and asked me to come for another ultrasound on CD14. I had femara 5mg on CD3 to 7 and this is my first <a href="https://glowing.com/glow-fertility-program">IUI</a>. Why is my body not ready. Will the cancel <a href="https://glowing.com/glow-fertility-program">IUI</a>?