The origin of the term “Up a creek without a paddle” is widely unknown, but many people believe it came from England. Luckily, you don’t have to understand the origin of the term to understand the meaning.
To put it simply, “Up a creek without a paddle” means that you are STUCK. As in, can’t turn around, can’t get out, can’t swim your way to shore unless someone helps you. Alone — you’re out of luck.