This painting was done by the Flemish artist Jan van Eyck, in 1434. It's supposed to be a portrait of Giovanni Arnolfini, and his wife [who was deceased by the time this painting was done]. It is a very complex painting, full of symbolisms. And no, Giovanni's wife was not pregnant, what she is wearing was high fashion of that time.
That's just the painting in a gist; there is so much more meaning to it.
Image taken from our faithful Wikipedia.