I have narrow oval shaped stool softer in consistency. im really freaked out its somthing like a tumor or polyp. i had lower left and upper left full abdominal ache but it went away just now have the oddly shaped stool and nervous.

IBS: I understand that you are concerned about a change in your bowels..Considering your age, your anxiety about the condition, the cycling of the symptoms, and the upper left abdominal ache ( which could represent gas accumulation), all suggest Irritable Bowel Syndrome or IBS, although more information is necessar.The most definitive test to reassure you would, of course, be a colonoscopy...Dr.Wellner

Wait a week.: If you don't have any more pain, just give it another week to see if your bm gets back to normal. If the pattern is persistent, you should consult your family doctor (make sure you have enough fiber intake) even though at your age, cancer is not the likely cause. It is also highly unlikely that any colon polyp would come loose like this