Hello Mr.Senthil kumar;
welcome to HealthcareMagic
Mild pain on right side may be due to duodinitis if it is 1 hour after meals;pain due to infection or inflammation of gall bladder
and liver;chronic appendicitis;and many cause so it needs to be seen in which region you have pain and it will help diagnosis.Also is there any associated symptom like nausea;vomiting
or the pain increases or decreases with intake of food.So please get examined by a doctor.For occassional pain in head and eye please see if there is any trouble in vision and the headache may be a fatigue
headache or even of a gastric origin.Consult a doctor and get treated.
Have a good day.