I’m so sorry to hear celery bothers you! I love celery. I’ve been on the low FODMAP diet for over two months and just bringing things back in diet slowly. Celery was one of the first I brought in. I truly can’t say what bothers me… All I know is I am trying everything I can and I’m still in teeth Gnashing pain. My rheumatologist doesn’t know what to do with me. I feel bad for my GP because she’s gotta listen to me complaining. All the best to you !