2 piece outfits for prom party

I'm currently 12 weeks pregnant I've been to the doctors for my confirmation on pregnancy and first ultrasound just wondering when is the next time I book it... this is my second pregnancy but I was in a small town before I moved here and had a midwife assigned as soon as I was 8 weeks!! Not sure how it works from here any help would be appreciated. 2 piece outfits for prom party