I'm sorry to hear that.  Losing a child upsets the natural order of things.  One isn't suppose to outlive a child.

Having lost a baby shortly after birth, I was most appreciative of friends who didn't try to "fix me".  I loved the hugs and kindness- not words of "I know how you feel" [and then proceed to tell me about a miscarriage] or the "it was nature's way" or "you will be able to have another one".   A woman's body goes through a lot in the delivery process and the body is ready for a baby- milk comes in, bodies need to heal- yet, it doesn't understand that there is no baby.  Emotions can run wild and cause physical manifestations as well.

There are support groups and if necessary, there is professional counseling.  It is surprising how many women have lost a baby. She may find strength with others who have experienced that same loss.

A good friend, an understanding husband and time can help heal a lot.