I only just came across this post, so you may already have everything sorted but i just wanted to share what my dr told me as i had this same thing. It first happened about 2wks after i had my baby and i tried to ignore it but as you know pretty painful and then i bled alot (sorry TMI) and DH "made" me go to the dr.

This is what he told me:

He had a look and said it was an "Anal Fissure" which is a small cut in/on the anus, and was something to do with the muscle around there being tight or something and can be quite common after childbirth especially if you are pushing for awhile. He said Yes may hurt for awhile as it is a slow healing process as it continues to happen each time you have a bowel movement. I was prescribed with Coloxyl Tablets to take 2 at night before bed (to soften stool to allow healing) and Anusol ointment which is used internal and external to help with the pain. He said if it had not healed within 2 to 3 weeks or got worse then i would need to go back and he would organise an Anal Stretch??(im sure thats what he said) TMI---> Where they use some long thin instrument to stretch the muscle around the anus allowing the blood to flow to that area and resulting in the muscle loosening a bit (only back to normal not anything you would notice!!) and it would heal within a few days.

Thankfully it healed and i didnt have to go back. Unfortunately though it has happened twice since then but has healed with the coloxyl, so i will have to go talk to the dr as it keeps happening unless i take the coloxyl but i dont want to be dependant on a laxative, i dont particulary want that nasty procedure done either!! I hate going to the toilet though as im scared it will hurt Lol.

Embarrasing situation though isn't it?

Hope its all sorted hun.