My doctor told me that he sees no fetal developement or cardiac activity. What should I do? I'm 9 weeks now!

At my last doctors appt.(last thursday), my doctor told me that he sees no fetal development or cardiac activity going on...he told me he will check again this week and if there is no change, I can either let him take the sac out, or miscarriage naturally. I dont want to do either. I want to have my baby. IS there anything I mean anything that I can do to avoid this? Please help I'm desparate!