What to expect at 14 week appt?

alexandra • Married 3 years. Baby girl born 01.2016. From Chicago. Teacher. Bulldog mom. Love cooking, football and Jesus.
Im just wondering what to expect at my second appt, when I will be 14 weeks along. I had an ultrasound done already at 7 weeks but I was measuring ahead over a week, so I am wondering if they might do another to check the growth? Or will they just wait until the gender scan at 20 weeks. What else will happen at this appt??