Already???

So here's how my cycle has gone so far:

Started stims (150U Gonal-F, 75U Menopur) last Sunday.
First u/s Weds morning, ~10 follicles in the 7-10 range.
Second u/s Fri morning, e2 329, ~10 follicles from 10-12mm.
Third u/s Sun morning e2 1100-ish, ~10 follicles from 13-15mm, guess by doc of trigger on Tues
Today, e2 up to 1727, ~8 follicles from 14-16mm, guess by doc of trigger on Tues

So, they only seem to be growing ~1mm per day, but apparently after getting my b/w back today they decided I should trigger tonight for ER on Weds.

I'm a little worried that we won't get many mature eggs as most IVF docs seem to like to trigger when the biggest follicle is closer to 18-20. I'm guessing that they are getting nervous about OHSS and so wanted to trigger me sooner rather than later. I keep repeating to myself that OHSS really sucks and that if we get five mature eggs instead of 10, all we need is one. I'm just hoping that we do get at least a few!

So.... if you know of any happy endings with early-ish triggers, please do tell!

(I'm also nervous about the silly IM shot in a few hours. Hopefully those nerves will be groundless like they have been for the other shots.)