I have seen people talking of other universes on this network. I know that some out there dream of different versions of Captain America than he himself does. And given that my new dreams do not line up with my former ones, but rather seem to exist in an entirely different time and place, I suppose it well could have been.
I haven't, in any case, dreamt of being a young boy save for a quick flash once of being very young and hearing stories of frost giants.