Talk to your pharmacist and see if you can get "generic" guard through your plan first. I wouldn't put it off another month if you don't have to. A script, if needed, should be able to come from your DDS, or have the DDS call the MDs office and have them phone in the script. You can get one at any drug store, but they cost at least $25... even the sports stores have some, but they don't mold to your jaw usually.