What the heck

Had my scan to see how big my follicles were. Two big ones 24 mm and 28 mm in each ovary. Went to get the trigger shot after and they are out of stock! But the dr still wants me to do <a href="https://glowing.com/glow-fertility-program">IUI</a> tomorrow regardless of shot. And I still haven't gotten a positive opk. The dr said Judging by size I should be getting a positive opk today or tomorrow. Is it even worth doing <a href="https://glowing.com/glow-fertility-program">IUI</a> if I'm not ovulating yet? Just irritated.