So you have an ostomy right now, correct? There are a ton of resources online. My ostomy nurse told me to avoid mushrooms because they expand in the stomach and can cause issues. Avoid celery and lettuce. I think I tried lettuce (like a bit on my sandwich every now and then. I think trying things in small portions is key. I know what you mean about missing things though - I really wanted an apple when I had my ostomy. I didn't want to risk it.