Pineapple causing contractions?

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Has anyone heard of this? A coworker told me to eat pineapple to induce labor (not currently trying! I’m only 36+3). I’ve been having a craving for it. The last two times I’ve eaten an entire can of pineapple I’ve had some really uncomfortable contractions, though nothing time-worthy. I thought the first time was just a coincidence but it happened again earlier today.