It seems my bowel emptying routine has changed for few weeks now and i poop little every time. could it be indication of something serious??

Whenever there is a major change like this in your bowel habits, it should be evaluated by your doctor. It could be an issue like constipation but it may be a more serious issue that needs to be diagnosed and treated. You may need to see a GI doctor for a colonoscopy to determine what the issue is so that it can be treated. So, see your doctor. Good luck!