Would I also now be in america? Would I still have my old memories, or would they be partially or completely replaced by some different memories of growing up black?
Well, the first thing I'd do is o to a doctor and ask if there's still some blood samples or something in storage that prove that I'm still the same person, though looking a lot different, or see if my DNA has changed.
After that, I'd grow an afro for the novelty of being able to.