I have been experiencing constipation for the past few days. Initially, I did not pass stool for two days. On the third day, I felt the urge to pass stool but had to hold it in because I was busy. When I eventually went to the toilet, passing stool became very difficult. The stool was initially normal but sticky, followed by a large, hard piece that I was unable to pass completely. The main problem is that the stool does not seem to be stuck inside my rectum. It comes down and reaches the anal opening whenever I try to pass stool, but its size seems too large in proportion to the anal opening, making it difficult or almost impossible to pass. Only a small portion comes out, while the rest remains inside.