No need to apologize! Welcome! Definitely you can have a delayed reaction! Especially in the case of fructans (chains of fructose) but also with fructose. For me if delayed it is usually 8 hours or so, so I eat iffy things in the morning. I find a reaction depends partly on how much fructose/fructans is already in my system. If I have closely followed the diet for three of more days I can usually get away with eating something I couldn't if I'd eaten something I shouldn't have the day before. It is very difficult to find a pattern; it took me about 10 years. Why don't you try the diet I've listed in this fm discussion section? I think it is on about page 5. Fructose is in tons of stuff. You may need a _no_ fructose diet; that's the case with me for the most part. I can't even digest artificial sugars. Best of luck.