Hi. Welcome to healthcaremagic, digestive system community forum.
Since when are you having the pain. Acute onset abdominal pain
following food consumption are probably due to intestinal cramps
or infection. Yes, bowel obstruction is a strong contender in such scenario.
Chronic regular cramps can occur due to irritable bowels, colonic diverticulum or one of the inflammatory bowel disorders.
A detailed history and a good clinical examination supported by colonscopic findings for evidence may be needed.
As I do not have other details of your history, my options are limited. Consider a face to face consultations with a gastroenterologist.
Hope this was useful..
Get back to this forum, after examination.