KGB - cheese would account for some of the carbs as well as the roll. Not sure how big your roll was though. I'm unsure as to the carbs in an avocado either. I don't drink diet coke so can't help you there. Was there any dressing on the salad?
Hold on I might be getting ahead of myself here. Have to been educated on carbs and how much you can have? I know some of the girls weren't told that stuff and it's really important.

Personally I found grainy bread ok, especially the 9 grain one with wholemeal. I could have it with either baked beans or a couple of eggs at lunch and had great readings. Mind you I was home for most of my lunches at that stage so I could make those things.

Oh and you're not being a pain! We all had these questions when we were first diagnosed too!