I had an u/s at 10 weeks and my baby got three descriptions from three seperate people....
1. a peanut (charming DH)
2. A jelly bean (ignorant little sister)
3. An axolotial (work friend comedian)

It will depend on the position of the bubba at the time but like someone else has already said, it is more to see the heartbeat and sac.... hopefully the sonographer will point the heart beat out for you.

Good luck!

MG