Headache after eating may be a symptom showing you are suffering from reactive hypoglycemia also known as postprandial hypoglycemia . Headaches can be distracting, disruptive, and distressing—especially if you don't know what causes them. read more
make sure that your headache is not because of any other condition ,it might be a coincidence that both these things happen together.And like other people said keep yourself hydrated and try not to overeat causing digestive problem like gas and constipation. read more
Leftover foods: Eating leftover food is a common household habit. But people suffering from migraine should avoid eating leftover foods to prevent headache due to increased amount of tyramine. Tyramine is actually a substance derived from the amino acid tyrosine that is present in a lot of foods. read more