@pingc383 Sorry I wasn't here to answer your question before Luv, but I see @Molros and @Maxwellsmum have answered it for you
I reckon your lining will get to 8mm's easy by transfer day Luv
Yes...I'm not impressed with your FS triggering you at the bare minimum of follicle/lining measurement though
The tight a r s e b*tch could quite easily have stimmed you for a couple more days and let that follicle grow until 18-20 mm's which would've let your lining grow a few more mm's and gotten your E2 levels up a bit higher too The reason they're at the level they are is because the follicle is at the measurement it's at...because it's not really ready yet.
Yes, the Trilaminar Pattern is important but like @Molros said, so it making sure the lining is the correct measurement as well when you trigger. All that cheapskate has done is get yours to the bare minimum (another cost saving measure I have no doubt) before sending you on your way
Fruck her Luv!!! Your lining will be right never fear!!!