I am 15 years old this year and about 3 days ago I have some digestive problems. I have mild pain in the lower abdomen and have frequent bowel movements, no more than three times a day. The first time, I went in the morning, the stool was not abnormal. The second time I went, I also felt mild abdominal pain and had a bowel movement, the stools were flat and slimy, easy to pass, when the stools were a bit hard, it was a bit difficult to pass, but the number of stools of the 2nd and 3rd times was not much. If the pain is mild in the lower abdomen, then the pain in the lower back also makes me feel sick. In the evening, when I just finished eating, I still feel discomfort in the epigastrium until at night, I feel that I have a tight stomach, I feel like there is a gas in the abdomen near the navel. The doctor asked me, what's wrong with lower abdominal pain, mucus in stools? I thank you doctor.