Since your medical abortion
has failed,this is something which is normal and happens with many women,the only proper treatment is surgical abortion.Basically there is no surgery in true sense.
It is simply a D&C procedure where cervix
is dilated and uterus
is emptied of it's contents with the help of a curettage.
It is procedure involving only few minutes.
Talk to your GYNEC for proper explanation and get it done.