I am suffering from mucus stool and indigestion since from 3 weeks. recently i had laser treatment for kidney stones and after removal of urinary stent i was given antibiotics of 500 mg. which made my problem even more dangerous. now since from a month iam suffering from uncontrollable bowel along with indigested food coming out. even i took loperamide hydrochloride for 2 days it also didn't helped. please advise whether im suffering from cancer or what. before kidney stone treatment also i was having habit of going  2 to 3 times a day. my age is 32 and weight is 55. i always feel fatigued. i wake up daily with lower back and bowel urgency and having extreme burping.