Well, first off, several things there you shouldn't be eating.
1. Applesauce is fine, SO LONG as it's unsweetened (it will say on the jar, natural sugars from the apple are fine). I bet yours isn't.
2. Toast is NOT okay unless whole grain. I bet yours isn't again.
3. Bananas are the single thing that hypoglycemics MUST avoid for a very long time. They're pretty much the worst fruit on the planet. If you must have them, no more than 1/2 per WEEK, no joke.
4. Crackers are also bad, unless whole grain.
5. You can ONLY drink herbal tea for awhile, I recommend rose hips. Decaf does not mean no caffeine, it simply means less, and you can't have any right now.
6. Try eating some plain yogurt, and I mean PLAIN. Also, go to a health food store and look for something called primal defense, that will help to kill what's in there. If it's a virus, you can also try drinking straight, freshly squeezed lemon juice in the morning on an empty stomach.