I went to to submit my medical too without having request from CIC. But IOM ISB told me not to do so since there is no way to match UCI number. As in, once cic generates medical request they generate UCI, and medical is done on that UCI. but if I do medical now, UCI from IOM will be different as they will generate their own. And then there is no way to match two different UCIs from CIC and IOM. So I dont know what happened here.
And yeah flyingjalebi I think for you, they might have exempted you from medical that is what it passed