Won't know the sex of the baby until birth

Went for our scan today and knew we didn't want to know the sex of the baby. Told the Dr and he said in his 13 years, we were the first couple not wanting to know at all. He's had them want it wrote down the sex for a surprise gender reveal party but never not wanting to know until birth. Time come and he wanted to know the sex (the Dr) so my husband and I turned around. Dr snapped a pic and went back to looking at the heart. When he pulled the pics off, he tore off the last photo taken (the one showing the baby's genitals). He's putting it in my file for after I have this baby. :) so we won't know the sex until birth but will still have the ultrasound as a bonus. I can't wait!!!