Why does seeing other people cry make me sick? (vomit)?

So I’ve noticed whenever I see anyone cry in real life or watch a video where someone cries I feel sick as if I’m gonna throw up 🤮 like ofc I want to help the person but I’d have to hand them a tissue or hug them without looking at them because of this issue. Is it normal?
Why does seeing other people cry make me sick? (vomit)?
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