I remember watching a Scooby vid a few years ago.
He has scoliosis and said one of his lats was significantly bigger that the other.
Never noticed it. Even when he pointed it out I didn't.
I wouldn't worry, Things you notice yourself ALWAYS seem bigger or worse than what they are.
And if everyone has a bigger side like OffRoad said, well then everyones in the same boat, and I don't know about you but I've never noticed when looking at any bodybuilder or powerlifters physiques that one side was bigger than the other.
Don't worry Nathan, I'm sure you look awesome!