Nellys Perfect Baby. The amazing Nelly is pregnant with her first baby. She is very excited and it will be a joy to hold her baby in her arms. Before the birth, she needs to go to the hospital for a prenatal check up. Begin the amazing game called Nelly’s Perfect Baby and check her oxygen level. To keep her health you can give her a Vitamin C pill and check her blood pressure. The next step of the medical check up is to do an ultra sound. Place a special cream on Nelly’s belly and use the ultra sound machine to check the baby and determine the gender.