I had a punch biopsy but I think it was the vaginal wall. The gyn didn't warn me how much I would bleed, and it gave me quite a fright... I ended up in bed for the afternoon afterwards.
I can't remember how long it went on for, though. (was nearly five years ago)
But then I had a bit of bleeding with my smear yesterday, and its still ouchy today, so I think I am quite sensitive!