NT scan done in Southern California

Momma Kris • Baby girl coming June 2018 💕🎀

I’m just wondering what to expect at my NT scan tomorrow. My mom is going with me since my boyfriend has MOT. Will they let her in? Will they print me a picture of baby and tell me how far along I am? According to my LMP I should be 14w4d but Dr is saying I am 12w6d so I’m eager to know for sure. Also, if I am as far as I think I am will they tell me gender?