Talk to General Surgeon on Post Surgery Wound Bleeding

In my last post i forgot to mention few things so i deleted it kindly post this one. The pt went through a pilonodial sinus surger on dec o3.the wound closed completely in feb with no pain or drainage. But now out of a sudden the distal end of scar started non stop bleeding not heavily. The blood is of pale colour. No hole crack cut is visible. Pain occurs while sitting or lying straight. Why is this bleeding? Im worried what should i do?