Poop and mucus?TMI

Your GI tract is one long mucous membrane. Sometimes you will discharge some mucous.

I guess I'll have a go at this question. Mucus is pretty much everywhere in your body. When you poop, it helps lubricate your bum so that poop slides out easier, so it's normal to have it for the most part. However, if it's in such excessive amounts where you have this sort of "pooling" effect, I would go get a colonoscopy or something to rule out an infection of the intestines. 

You were probably constipated before you pooped.

Are you sure the mucus isn't coming from the vagina and mixing up with the poo when you wipe?