sex after baby

So it's been 6weeks & 4 days. I'm all healed up, pain has gone away and I finally have felt up to having sex again wth my boyfriend. We had sex the other nigh, painful obviously but everything was okay. Had sex again last night and painful again but not too bad until he kind of may have *TMI slipped out mid thrust and hit my pelvic bone and everything else so hard it hurts. While giving birth I tore my labia a little bit but the stitches and everything healed up really well and rather quickly but I think he may have tore me again, there was some bleeding afterwards and now I just get that burning/ kind of cold feeling I had after I gave birth. Has anyone else ever dealt with this or experience this?