TTC: need advice on follicle size + IUI

[jessicadp]

Hi ladies,
I am 40 yrs old and TTC for 1 year. In Jan 15, I tried clomid + TI - had 5 follicles but didnt take, in Feb I tried letrozole and had 1 follicle @ 30mm and did an IUI which didn't take. In hindsight, I shouldnt have done that IUI and wasted my insurance coverage.
This month we upped the letrozole and went for U/S today (cd 10) and I have 1 large follicle @ 28 mm, and 1 @ 11 mm and another at 13mm. I took a trigger shot tonight and am supposed to do an IUI in the morning. My regular FS has been on vacation this week and the monitoring doctor says it;s up to me. Insurance wont cover this IUI. My instinct says to 28 is too big and the others too small.
My instincts say hold off a month and do TI again and hope for the best. Then discuss injectibles or move on to IVF.
Any advice? Or success stories with those sizes?
Thanks,
Jessica

 

[Myshelsong]

I have heard that 28 is the largest that you want, but is still viable. I am not a Dr so I don't know for sure but I think it would be OK.