Went in this AM for a CD16 check. 2 follies, 15.5 and 20. Yesterday it was 15.5 and 18.5. Is it typical that one follie takes over like this? I had this last cycle too where when I had my IUI I had 3 follies and one was 25.5 and the other was 16.5 (it had been 19.5 a day earlier so it either shrunk or they measured it wrong?).
I just kind of wish I had 2 or 3 that were closer in size.
I go back again tomorrow to possibly trigger, with IUI on Thurs.

Re: "lead" follie - typical? (and my CD16 update)
TTC#1 for 19 months with PCOS and MFI IUI#3 + injectables = BFP!!!! Beta#1-134(13dpiui) Beta #2-392(15dpiui)
#1 born December 2011
TTC#2 - Beta #1 -51@10dpo Beta#2 -1353 @16dpo
#2 born May 2013
TTC # 3 June 2014 BFP 12-1-14
#3 born August 2015
#4!!!!!!! due June 2017
My RE's goal is to only have 1 lead follie. 2 is acceptable and if I had 3 or more, they may have cancelled the cycle as they strive to avoid the possibility of conceiving multiples.
Good luck tomorrow !!!
"Most of the important things in the world have been accomplished by people who have kept on trying when there seemed to be no hope at all." -- Dale Carnegie
"Our greatest weakness lies in giving up. The most certain way to succeed is always to try just one more time." --Thomas A. Edison