Pretty much any that you buy over the counter will be fine, but you might call your doctor and see if he will call in an RX for you in the meantime.
Anything over the counter will do just fine. It's critical that you start taking your folic acid now (actually recommended 3 months pre-conception).
I really like the GNC ones. I am on the second bottle. They have not once made me sick.
maybe your doctor can call your nearest pharmacy and you can go and pick up the prenatal vitamins that she perscribed. if you cant do that, any other will do fine too.