I believed I was saved at that young age and saw things differently from that day on. I was confused theologically due to the church I attended and my young age, but I did hunger to read the word.
I am apprehensive about a believer being baptized twice. I know many who have as a “rededication,”…but to me it seems to diminish the meaning of baptism. I pray that both you and I are not done growing in Christ, and will not be done in this lifetime. I think that twenty years from now we may look back and say that we saw things differently back in 2014 (at least I hope so). I guess my point is not to hesitate. Examine yourself, pray, reflect and determine your situation. If you were saved at that young age, then you have a strong testimony of growth and maturity since that time.
I hesitate to distract you with a book recommendation, but if this is something that is of great concern to you I’d recommend “Turning to God: Reclaiming Christian Conversion as Unique, Necessary, and Supernatural” by David Wells. Wells explores the differences between one who is saved from an atheistic or pagan type background and one who is saved while possessing an understanding and acceptance of biblical doctrine. In some ways the latter is more of progressive in nature, and perhaps we do not realize the precise time we (having grown up in the church) actually believe. Anyway…if you are interested and wrestle with the issue, it is a good read. But I’d recommend prayer, meditation, and speaking with a pastor if concerns persist.