I don't feel yer "stupid".. There's probably an element of "self doubt"..
I try not to think of these blood meter gadgets as medical.. More as a gauge. Like in a car. Temp gauge, warning light that sort of thing..
I tend to only let my garage do stuff I'm stuck on myself or weighed up that a mechanics rate is cheaper than forking out for a specialist tool that I will only use once...?
It's like moving contacts to a new mobile phone..? In this case it's a "like for like" meter.. Your DSN isn't going to know the difference..!