I wanted to know, my husband did not. We still don't know despite the 20 week ultrasound. I have a feeling it's a boy.
What happened with me, was the umbilical cord was inbetween the baby's legs! The technician said "98% chance agirl". I asked why she could tell even if most of the plumbing was obscured. Outcome, we still don't know. At this point, it doesn't really matter. I am hoping for healthy!