Is this normal for IUI?

Question

This is supposed to be my first mont doing <a href="https://glowing.com/glow-fertility-program">IUI</a> however I am still waiting for them to do it. I started Letrozole on CD 4. I did 5mg for the first 2 days but it made me sick so I did just one pill (2.5) for the rest of the 3 days. My period was pretty long this month until about day 8 when I finished the Letrozole.

I went for ultrasounds with the below results for my left side:

Day 10- 10mm & 10mm EMT 5mm

Day 12 - 11mm & 15mm EMT 5mm

Day 14 - 11mm & 15mm & 11mm EMT 8mm

They asked me to come back on Monday for another ultrasound. I feel like my eggs aren’t getting big enough or could they still grow?

Answer

It doesn't seem abnormal. I imagine they'll give it another day or two, but it's your first cycle so they may not be as clear as to when you ovulate and how your body responds to the medication.
I've done 6 iuis none successful. 1st cycle i went in on day 10 at first, but now they know my cycle better so I usually go in on day 12 and am ready to trigger that night or the next. Once I wasn't ready so they had me come back 2 days later. 
As for the letrozole I started with 5 like you. The first few days I had major hot flashes and crazy dreams, but it steadily improved over the 5 days. Every cycle since I have had no symptoms. I take it at 10pm at night so I tend to sleep through any side effects generally. This last cycle (my last before we move to IVF) we increased dosage to 7.5 as my follicles hadn't responded as well the prior month.  
For follicles I think they generally want anything over 15 with lining min. of 7, but this could vary by dr. From what I recall everytime I triggered I had one and only one follicle between 17 and 25. I've triggered on day 12 or 13 almost every cycle.
Hope sharing my experience helps somewhat!

Answer

After 5 days of letrozole 2.5 mg On day 12 my dominant follicle was only 12 mm and my blood work showed I was still super early on in my cycle so they let me go 4 days and came back and it was 18mm which is when they trigger at my
Clinic. It didn’t work but they said it was normal and then put me on 5 mg for my second iui and on my 12 day scan I was already at a 18mm and triggered and I’m waiting to see if that worked

Is this normal for IUI?

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