Pain after motion. For the same.

Hi, My father(age-65, weight 55) is experiencing stomach pain after motion from the last four-five days. No difficulty in motion. No blood coming, no loose motion. So possibility of piles is quite rare. Though his digestive system is not that strong and experiences constipation ofenly. The pain is in the middle of the stomach. The pain is not very high, but its a continuous pain which continue for the whole day, after going to latrine.(motion). He is already on less spicey food and very minimal rock salt, as he is ckd patient. Though he is not taking any medicine of ckd. He is taking high BP and anti blood clotting tablets from the last 5-6 years. He is also experiencing frequent urine from few days. I am avoiding to take him outside due to this covid situation. Requesting the doctors to please prescribe medicines for the same. Thanks.