I've just done a search on this and feel like I actually came off pretty lightly... After birth of dd 7 months ago, I had some first degree internal tears which were stitched. Just before my 6-week check I had sex, which was very sore, but I was told this was not unusual 6 weeks after giving birth. Over the next few months we had a few more tries at sex but the pain, a tight, stinging sensation, did not abate (there was no pain except during sex). I went for a smear test recently and the nurse noticed that it looked red inside (and me wincing) and suggested it might be an infection. She told me to come back after I had my smear results. I went back and saw the doctor, who did an internal exam and said that it's probably sore scar tissue that may take up to a year to calm down. Or not! In which case I might have to consider an operation. In the meantime, I have been prescribed an anaesthetic cream to put on it before sex or tampons (AF started up again a week ago and tampons were also owowowowow).
Not really sure why I'm posting all these gory details, except to moan (don't exactly want to share with anyone in RL). Feeling pretty low about it and hoping for some reassurance from someone who has had similar and it all went back to normal. Please tell me it did. You can lie if you want.