It was a process I guess. I don't remember a lot of my childhood, so this situation definitely made a big impression. I learned reading at that same age, spent a lot of time studying the bible, and also received the communion with 7 or 8. I know for sure that I didn't believe anything that happened there.
I resorted to praying once, when I couldn't find a toy or something in my mess around the age of 10. But I quickly realized how silly that was :D