Communion was also an issue to me as a child. It was the custom of the church I attended that unbaptized children did not generally receive communion, except on Christmas. It was clear to me that there was an issue of worthiness; the unbaptized had not been made worthy to partake of something so holy (the exception on Christmas makes no sense, but it actually served to heighten my perception).
The church I attended also always used the Gospel narrative of the last supper at the communion service, so I heard, often, the words of Jesus, "This is my Body. This is my Blood." While my family, and the church we attended, did not teach the doctrine Real Presence, I believed. When God said, "Let there be light," there was light. When God said, "Let the earth bring forth the green herb, and such as may seed, and the fruit tree yielding fruit after its kind, which may have seed after its kind upon the earth," it was so. Why, when God says of bread, "This is my Body," should that not be so at His word also?