Car accident!! At 6 weeks.

Last night someone T-Boned me when they weren’t paying attention to me going straight and they had a stop sign I didn’t ! Neithertheless I went To the ER and basically they asked me to be undressed from waist down?? So I did that and all they did was take my urine sample to verify pregnancy and make sure no blood was in urine was in the urine in which it was no blood present. I’m wondering what was the point of getting undressed waist down? They didn’t do any type of pelvic exam or U/S.. Should I call my OB and request some type of “check up” .. even tho I’m not bleeding. What would you ladies do?