NT scan?

Ally
Hi all and happy Monday. I have my NT scan tomorrow and I'm wondering if any mamas abs mamas to be can fill me in on what to expect?  Do I get to see an ultrasound of my baby tomorrow?  I'm very nervous as I had my first ultrasound 5 weeks ago and I haven't felt very pregnant at all the whole pregnancy. I'm just worried as I'm sure all of us are. I'll be 11w6d tomorrow and have my second doc ultrasound this Friday at 12w2d. 
Thanks for your input in advance!!