So many people today have been "baptized", but have never been baptized in obedience to Jesus. Baptism was a religious practice far before Jesus commanded His disciples to be baptized in His name. Baptism symbolizes a new life in Jesus. The old man is gone and a new one has come.
Have you been baptized SINCE you have believed in Jesus? If not, why not? Baptism is a spiritual experience that marks our faith in Jesus. Don't let your pride keep you from this rich experience. Don't let your "religious baptism" keep you from this spiritual experience either. It is something to consider.