Cromolyn, should I or should I not?

My doctor prescribed cromolyn but I'm really hesitant. It's been months and I can't decide.

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Curious if anyone has had a similar experience to mine: gut issues are rare for me, but I also have emetophobia, visceral hypersensitivity, and OCD so I'm pretty scared to try it and feel nauseous, get diarrhea, etc, because it will be very hard for me mentally.

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From what I read online, it mostly targets GI issues, but from what I'm reading from actual people, it can help much more than that. I really can't decide if it's worth the possible side effects.