First iui

Need help and to vent first iui! I'm trying to stay hopeful but feeling alittle discouraged! Took letrozole cd 3-7 went in on cd 11 which was Jan 3 for a follicle scan. Had 3 follicle one which was 27mm other two was 18mm and 13mm. So nurse said if I wanted to do iui I needed to do it that day and to save my trigger since it looks like I'm ovulating on my on. I asked was she sure since i didnt get a peak lh yet and she said yes shes sure.So we eneded up doing the iui and was told to bd that night. So Monday the 6th lh started getting darker so I reached out. They told me not to test lh anymore since it fluncate and to test on Jan 17th. I'm hoping I didn't get a iui to early.