The character of pain, location, timing, alleviating and relieving factors, associated symptoms, all provide clues to the possible diagnosis.
Whether it is constipation, change in stool caliber or intractable diarrhea, any persistent change in stool pattern requires medical attention.
Bleeding with bowel movements is a common problem, and needs a systematic approach. Don't attribute every case of bleeding to piles/ hemorrhoids.
A protrusion of something that should be inside the abdomen, through the muscle layers is a hernia. You see it more often before you feel it.
Every symptom associated with the anus is not from "piles". Most common cause for pain is a fissure, but sometimes, things get complicated.
Discharge of pus is often a result of some infection. Though it might be tempting to treat with antibiotics, the problem will continue until the underlying reason is addressed.
Typically episodic upper or right abdominal pain, but not always.
In our culture, a lot of chronic abdominal symptoms are chalked up to this.