is there any symptoms that we know is a baby is normal functioning normal in his organization

By organization you mean baby development Right?? Yes there are scans at every stage that make sure of the baby development...
Don't worry all will be well.
You can have your first scan around 9 weeks..

An Ultrasound Scan Report: A Treasure Box Of Information During Pregnancy

Scans Recommended For Every Mom During First Trimester

Scans Recommended For Every Mom During Second Trimester

Anomaly Scan: An Effective Tool To Detect Defects In The Baby Before Birth