Timing Trigger Shot and Ultrasounds?

For my last IUI they triggered me at CD 17 and I had 4 Follicles - 15, 20, 24 & 27...I have been reading that they should trigger you around 18mm..last time I had scheduling conflicts with a wedding I was in so that was the reason the trigger was later...shouldnt I be triggered earlier? Also I go in for a sono on CD 10...how ofter should I go in for sono's?

TIA

Re: Timing Trigger Shot and Ultrasounds?

i think that is the standard to go back in on CD 10 after taking CD 3-7 of clomid, at least this is what i have been doing every month. From there it really depends on when they want you to come back based on how mature your follies are at that point. I have gone in and was told to come back like 5 days later and other times told to come back 2 days later so it really varies. good luck!

Re: Timing Trigger Shot and Ultrasounds?

I think 20 and over is mature so they would usually trigger then. (might actually be 18). But what you have sounds good.