What Causes Consistent Stomachache, Headache And Fatigue?
gastrointestinal investigation is probably required
Detailed Answer:
Hello,
if you only have symptoms when you eat then there are various possibilities. A common one is stomach ulcer which presents with pain almost immediately after eating. Pain that occurs a little later (half an hour or so after eating may be present in vascular diseases of the intestine. Reduced blood flow to the intestines when the need for blood is high (after eating that is) may result in pain that discourages the patient to eat. A gastroenterologist is the right specialist to investigate such symptoms.
Regarding the rest of your symptoms they're kind of vague. You should determine whether fever is present or not and how high by measuring the temperature at least a couple of times per day (morning and evening) for at least 3 consecutive days.
I hope you find my comments helpful!
Kind Regards!