英語のことわざ

It never rains but it pours.

The literal meaning of this proverb is that when it rains, it never rains lightly. It always rains heavily. What this means is that when a bad or unlucky thing happens to you, it will be either very bad or (more usually) many bad things will happen to you at once, you will go through a very unlucky period. You are never a little unlucky; when you are unlucky, you are very unlucky.