Hello. Welcome to hcm.
abdomen can be due to various causes from obstrustion to bowel ischaemia,infection or perforation. A detailed history and physical examination can point out towards a cause and we have to proceed.
I advice you to visit ER. Depending on examination,you need to undergo xray,ultrasound
or ct scan
abdomen to find out the nature and cause. Endoscopic examination is needed for bowel problems and treated accordingly.
All the best