Nothing bad can happen to you dont worry about it, the same happened to me my bmi was over 40 and i started on SS my book says 810, I know they should have a letter from your GP its not your fault your CDC hasnt carried it out, if you want your CDC to carry out the correct proceedures you should speak to them. Although im no expert but im sure someone will be along soon to give you some advice on what to do next. Im sure it will be sorted soon, and once again dont worry,