What to expect???

I went to an OB in 2015 bc I wasn't getting pregnant she referred me to an RE who I saw for almost a year before switching to another RE where I did two more IUIs and then finally IVF resulting in my current pregnancy. I started at 4 weeks with blood draws. Did 3 total. Had my first ultrasound this past Monday (02/06/17). They called me after the daily meeting to let me know they didn't need to see me again and I could go ahead and see an OB. So I called and they scheduled me for 02/21/17. My question is what should I expect at this appointment? Will they do another ultrasound? I already had all the STD testing done right before we did ivf also was checked for the MMR vacince and chicken pox. Along with other things. All of which is being sent to my new Drs office plus they gave me a print out of the basics to take with me.