The Orphan as a Youth

We were introduced when I was
in a different form.
My head was bigger
relative to my body.
Now I am long limbed and
small skulled.
.
My parents,
whom you met, have turned to
what you call
chemicals, as far as
anyone can tell.
They travelled back
I don't know where. Only they
know now. It's just an
un-whispered secret.