It's common to have light bleeding for a while after a D&C
I also found this:
After a D&C, you will generally get a list of instructions with the following suggestions:
* Avoid intercourse for 2 weeks. The dilated cervix needs a chance to shrink back to normal size. Until this time, bacteria can easily get into your uterus and cause infection.
* Use only sanitary pads for bleeding. Avoid tampons for at least 2 weeks. Do not use douches.
* Be sure to return for your follow-up visit. At this time, your doctor can discuss all lab reports on your tissue samples. Your doctor will also want to examine you for any signs of infection and to make sure your cervix has returned to normal size.