I had bloodwork done at my first MW appt, which usually I opt out of...obviously I was a having major mommy brain, because i got the bill today...$700 for Rh, blood type, rubella titer, hep b titer, etc. so cursing myself for running into that bill. .
As for showing At 12 weeks, YES, it's possible to show now, and it is also possible not to show for a long time, as well. Being on my sixth pregnancy, I look huge already.