Fell on her belly on the tile, short fall, but still worried

So my pregnant cat was playing with a toy and got really crazy, she jumped and fell about 6 inches onto the side of her belly on the tile.

She didn't seem phased by it though... Am I just being paranoid? Is there enough cushion in there for it to protect the babies from that small of a fall?

Probably ok, depending how hard she fell, Just watch for signs of discomfort or discharge.