I had a similar "recovery" - pain and stinging and such. I finally got brave enough to look and saw that I was still bleeding from the tear (3rd degree). I saw my doc at 4 weeks postpartum, and he tried to convince me to wait it out, that it would heal on its own, but I was in agony! (Forgive me for TMI - every time I had to do #2, it would start bleeding all over again - OUCH)
I finally saw another doc at 5 weeks who applied something called "silver nitrate." It stung like crazy when she applied it, but afterward, I felt SO much better. It was like it healed over that last part of the tear that wasn't healing. She couldn't understand why my other doc hadn't treated me when I first came in.
Good luck, and go see your doc and let him/her help you so you can enjoy your baby!!! Take care.