hello

your child requires further examination and investigation

this i suggest because the pain is getting worse with physical activity and you are also saying that it hurts when he coughs or sneezes.........simple constipation does not explain that ........

you are also saying that he is passing stool daily

can you tell me which area of lower abdomen is this pain....the right side or the left

is there any blood or mucus in the stool

reply with further details for a better answer

hope this helps

take care

hi,
thank u madam for query.
it is not constipation, causes of lower abdominal pain are
•     infections: Viruses or bacteria can cause abdominal pain, typically from stomach flu or gut flu (called gastroenteritis). Viral infections tend to go away quickly, while bacterial infections may need an antibiotic to get better.
•     Food-related: Food poisoning (which has symptoms like those of stomach/gut flu),food allergies, eating excessive food, or gas production – any of these can cause bloating and temporary discomfort.
•     Poisoning: This can range from simple problems, such as eating soap, to more serious issues like swallowing iron pills or an overdose of medications [such asacetaminophen poisoning
•     Surgical problems: These includeappendicitis and blockage of the bowels.
•     Medical causes: Things outside the abdomen can cause abdominal pain. For example, a child can have abdominal pain from complications of diabetes or from ablack widow spider bite.
you should consult to good pediatrician.