There is another section here where there is a great amount of chat on constipation. You might want to read through that. Soaking in warm baths can help. There is also a foam suppository dr can prescribe. I am sure you have tried the OTC remedies. The main thing is to keep your bowel movements soft until healing begins. Ask if you can take Senna pills, which are OTC and not heavy duty laxatives.

I have felt your pain! It’s not pretty.