Ten Bagua of the Book of Changes -63: Rain is not beneficial. There is nothing to blame for worrying about this. It means it is no good for a man to comfort a woman in trouble. But it can alleviate women's worries, so there is no harm. Twenty gossip-92: A dead young man gives birth to a nest, and an old man has a wife and daughter, all of which are fine. There is no harm for an older man to get a girl.
So, it seems that the two dreams are interrelated, and it's nothing. But twenty-one years is too early. Don't get married yet.