I had a D & C on 14th Dec 07, i bled slightly after then it stopped, i abstained from sex for 3 weeks then we had a wild one een i enjoyed every bit. Your body is still healing from this, and that's why the cramping and bleeding, your bones must be still weak, you need some time to regain.
i would wait a while longer but ive never experianced a d and c soo i couldnt really tell you sorry