Thanks for query,
it seems that you might have acid stool causing constipation
Take Omiprazole or Ocid daily for few days which will make your stool alkaline and remove constipation.
Do some abdominal exercise
which will increase peristalsis
movement of intestines and remove constipation.
Take more green veggies containing more roughage and fresh fruits like Papita,watermlon,bananas etc.
Reduce your weight.
Do regular exercise like running,swimming, jogging.
Ok and bye.