IUI day scheduled!!

So today I went to get my follicles measures, there is 2, the right side is 18 and the left side is behind at 15( that size also has my 5cm endometrioma), I’m going on Friday at 1045am to get my IUI, I take my trigger shot tonight so here is hoping for a positive outcome and praying it works. I’m a little concerned that maybe the follicles aren’t that big but she said they have some time to grow. I was also on Letrozole for 5 days before this. Please if anyone had any positive outcomes and is similar to mine let me know!