I have a CD13 U/S this afternoon. This is my first cycle using Ovidrel. I'm just wondering what days they usually had you trigger on? If you have measurable follies, but not yet mature...do they just tell you to wait 2 days to trigger, or do they bring you back in for an U/S?

Re: Just curious - What cd did you trigger on ovidrel?
"If we couldn't laugh we would all go insane" -- Jimmy Buffett
No, my RE always made sure we had 18mm (minimum) follies on u/s before triggering. Becuase if you have measurable but not mature follies, they might not necessarily mature in 2 days. It's a risk to take!
For my 4 IUIs, I triggered with Ovidrel any where from CD 14 to CD 16.
TTC #1 since 2007. Dx: Unexplained infertility. 4 IUIs in 2008 = BFN. IVF #1 07/09. DD #1 born April 2010 (40w5d).
TTC #2 since 2011. Dx: Endometriosis and hypothyroidism. 2 FETs in 2012, BFP 6/12 but m/c @ 7 weeks. IVF #2 06/13. DD #2 born March 2014 (40w1d).