Its a different type of ultrasound to be able to see ur baby. there very interesting i would recommend getting one so u can see baby and see there face see who its gona look like its just something to do for the fun of seeing ur lil one
You should do it but i was told not to do it until your like twenty six weeks
I had one done wen i was 15 weeks ... but its true u should wait longer so u have more to see..