Welcome to the site!

You must be making really quick progress if you already did reality checks in your dream ( I RARELY do them in dreams). The problem though is that you never knew [I]why[I] you were doing them thus you never knew that you were dreaming. A lucid dream is knowing that you are. Don't worry about it though. I once read something, and then read it again but then I figured it wasn't a big deal (though that is a reality check, one of the very few i've done). Just remember throughout the day, WHY you are doing these checks, and you should be fine.

Good luck my friend!