What foods have no sugar. My mother is on her way, but won't be here until Saturday. They need to be more or less simple to make. Super simple. Any help would be great. Links to some long term food ideas would be great too.

Right now I'm eating a can of white crab meat. It's all I could find. It only has 90 calories though. I"m only eating the bananas because I'm not really eating right now. I have no appetite, but I know I need to eat something with this Tramadol

Is sugar substitutes bad for what I have?

Thanks.