My anus burns for some time after i go to poop. and some times it itch but not when i am pooping . and i spent 30-40 min a day to poop which is a lot ?

Needs: examination. anal irritation from stool, infection and anal fissures are some of the common causes. If constipation present and blood on tissue may suggest hemorrhoids

Need MD exam: In the meantime anal burning & itching can be relieved by OTC hemorroid creams like Preparation H.. You probably have an imbalance in your colonic flora. Take probiotics daily,plain yogurt, 2-4 OZ of Kefir- yogurt drink available now in most of the grocery stores. Kefir is a Russian yogurt full of friendly bacteriae which you need. 30-40 min/day is tooo long! drink plenty of water.