Do follicles get checked day of iui

Jessica • 4 1/2 Years ttc,Pregnant after 3rd IUI. 💕Feb 7, 2019 Baby girl 🙌🏼 Miscarriage 07. 2024 👼 Now 3 years ttc baby #2

Hi hoping I get someone else on the same boat or similar, so I went in on Friday to check follicles after being on clomid which was cd11 I had 2 follicles measuring at 11 and 12, Doctor says they grow 1-2 everyday so Sunday she wants me to do the trigger shot and Tuesday insemination, do they check follicles day of <a href="https://glowing.com/glow-fertility-program">iui</a> after trigger shot was administered??