internal ultrasound question.

Victoria

tomorrow I have my first internal ultrasound to see whether I have miscarried my angel, my doctor didn't really say a whole lot to me and I have some confusion. am I supposed to have an empty bladder or a full one? and if I do have a full one would it affect my chances if they done and external ultrasound first? also would I end up having blood tests tomorrow? thanks ladies. I'm so worried and just want to know now whether my baby is safe or not x