Yeah, I was thinking the same thing as diamondintherough79 while reading your post, I wonder why they didn't suggest that? It is called a cerclage and I would talk to my doctor about it if I were you. Can't hurt to ask. Other than that I say take it very easy and adhere to the bed rest, I know it must be hard.
I have heard of stitches being put into the cervix, that might be an option. Praying that baby stays put!
I wow, I'm sorry, I don't have any advice but i wanted to offer my thoughts and prayers. Did your water break?? If not, i'd say there's still hope that baby will stay in there for a while! IMO, your doctor should be able to give you *some* kind of prognosis. xxoo