I'm scared something is wrong with my bowel?

I researched and I thought it could be Irritable bowel syndrome. I'm thinking.. Why? Just because I drank a smoothie from jamba juice? Help, I'm scared. I was about to be taken to ER till I was feeling fine again. Today is the second day, yesterday was worse. A lot worse. Today gotten better.
I'm scared something is wrong with my bowel?
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