Murphy's law:
"Whatever can go wrong, will go wrong" (or, alternately, "Whatever can go wrong will go wrong, and at the worst possible time, in the worst possible way" or, "Anything that can go wrong, will," or "If anything can go wrong, it will, and usually at the most inopportune moment").
OT: This year it was an inconvenient moment to have an accident for me too. Because I am in the middle of a building project of my home and I have a veryyyy strict budget because of this. Guess what happened 1 month ago: I crashed my expensive bicycle and my car broke down about 1 week later!
Shit happens… :D