3 smaller follicles

Gr

This is my 4th found of letrozole and trigger shot. The previous cycles I have had one follicle, anywhere from 15-20mm at cycle day 10 or 11. Today I went in for an ultrasound at day 11, and I have 3 smaller follicles, 13.8 mm, 12.4 mm, and 10.8 mm. The nurse said that it’s not unusual for the follicles to take longer to grow if there are multiple. Has anyone had multiple follicles that are smaller? Waiting on my doctor for feedback, but I’m so nervous and confused why this cycle is different.