I was ready at 4 weeks PP, after bleeding subsided. I did major searching online to see if other women had sex before their 6 week check up and if there were any negative side effects. From what I read, most women did it before the 6 week check up, at around 4 weeks and were fine.
That being said, it was uncomfortable as it was pretty dry down there. Lube helped but it was still foreign and uncomfortable. We continued to try it to get back into the swing of things. It took about a week or 2 until we finally just had really good sex. 16 weeks PP and things are completely normal again.