Hi Bella,

Those results sound pretty good to me

My clinic trigger when the follicle is 18 to 20mm and like a lining of 6mm of above, so you are going well for IUI by the end of the week I think - but I'm no expert

The 17mm one will probably be the one to ovulate, and as long as the other follicles don't catch up you should be right

Good luck!!