Every time I eat even a few grams of sugar, after about an hour, I get an excessively watery mouth, increased thirst, and hiccups. I feel horrible. When I lie down, after about an hour, I feel completely better. My blood sugar was 79 very recently. I only ever feel sick after eating sugar, never in the morning. I am 13 years old. I get sick 4-6 times a week. I have thrown up from this before, but rarely. I am a very small and skinny girl and get sick with flu and cold the most in my family.