28wks

what can I expect at my 28wk ultrasound appt. besides an ultrasound lol. like, will Dr check babies weight? would my iron levels get checked (iron hasn't been checked since my first appt, & I was anemic with my other pregnancies), would I be scheduled for nst's or would that be later on? would I start going every 2wks from now on? I can't remember, sorry in advance!