Babies, boy or girl?

So, the boys have found these babies in the basement that have been there probably for years. But all of a suddent they have taken a huge interest in them! They carry them everywhere, change their diaper, sleep w/ them. We even had to take them in their strollers to the store, doctor's office, etc. Emmett's baby is Judy. She is 1 month old. Owen's baby is Emily. She is two months old.
A perinatologist scanned me at work again (twice on the same day), and the baby had his/her cord between her legs!!! But, he said he would say 90% chance that it's a girl. He said the cord moved a few times and he got a decent picture. We'll see.....this is a major exercise in patience! My 20 week ultrasound is in 10 days. Hopefully, the ultrasound tech will have a clear picture. Until then......I work again tonight! Stay tuned.......