We did it for the first time last weekend at the 6w mark. I felt brave enough, and after all I only had a small tear, which was healed already by the second week. I was super nervous and apprehensive about pain but went really slowly about it and it was better than I thought. No pain at all. But worryingly, it didn't feel much either, and hubby did notice things were a bit more lose there (sorry, tmi there).
Unfortunately my period returned also over the weekend (rubbish!!!) so now we'll have to think of contraception too. Meh!