L.H.
L.,
I am so sorry you lost your baby. I had five miscarriages before carrying my daughter to term. I know the heartache you feel.
I had D&C's with all of mine. Sometimes I had bad cramping a few days later. The best thing to do is rest as much as you can. Your body has been through trauma and will need time to heal. Keep an eye on your temp. If it spikes, get back to the doc. If the doc did a sonogram or checked you and said you're ok that's good. There is no harm in going back to the doctor to make sure if you're not feeling good.
All of my miscarriages were between 12-15 weeks. Each was different in healing.
Take good care of yourself and rest as much as you can. My thoughts are with you.
Blessings!
L.