If you think about it, there are on average 30 to 80 million sperm in a typical ejaculation. So I'd find Hitler's dad on the street, bump into him and jiggle his nuts a bit. Surely that'd be enough to change history.
So naive.... your bump was precisely necessary for the single unlikely Adolph sperm to make its way to the front of the line. You were always the nut-bumper that caused Hitler.