Could Sugar Cause This?

I've been sick with some kind of flu for the last week or so, and I haven't been eating a lot of solid food (mostly oatmeal and stews). The rest of the time i've been drinking hot juice, a lot of concord grape juice and cranapple heated with ginger or the like.

After a few days of this, i've started to notice anything sugary will give me a dull, persistent pain around my liver area. At first I didn't know what was causing it, but now i'm pretty sure it's the sugar.

Does anyone else have this experience or know what's up?

For a while i've been noticing a kind of numb feeling in that area sometimes, and I wasn't sure what it was, or whether I was imagining it. Now I think maybe I wasn't.

In general i've had some kind of issue with sugar for a while, and i'm wondering what this might signal and I thought i'd ask here.