Stool stuck in anus or Rectum dk. Pain?

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. When I eventually went to the toilet, passing stool became very difficult. 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. Whenever I try to pass stool, I experience significant pain and a burning sensation, almost as if the anal area is tearing. The doctor prescribed me the following medicines today: 1. Relux Syrup 2. Pantocid DSR Capsules 3. O.S/L Ointment.                 Will these medicines help soften the stool that is currently halfway out and stuck at the anal opening, so that I can pass it without experiencing severe pain?