What is the likely hood of someone over 200 pounds getting pregnant?

It depends on a couple of factors

1) how far over 200 lbs ?

2) weight distribution i.e., over 200 lbs @5'3" or over 200 @3'5"

3) and the final factor large breast and a big ol' booty , due to hormone injections to a majority of the foods Americans have been eating over the last 20 plus years , a side affect is women have been becoming better endowed ( breast tissue makes up for a majority of womens fat ratio)

So i say 200lbs is not a stretch to get pregnant but not the easist either just let it happen naturally