hi
Thanks for your query
i can feel your concerns 
i advise you to have a stool routein examination
tiny pin point sized things could be worms
i advise you to consult  your doctor
have a proper clinical examination
you may need few investigations like 
endoscopy and 
colonoscopy after consulting your doctor
take 
ORS and plenty of juices and fluids
zinc supplements are also useful
i advise you to take yougrt ,banana and rice
ispagol husk is also useful for constipation
avoid spicy and junk food
Hope i have ansewered your query
i am available for your help 
regards
Dr.imran