I lost about 4 kg last month. I do test my blood regularly. Thanks!
Well you're certainly not the atypical T2 put it that way so I'd suggest keep an open mind as to your diabetes type.
You may find you suddenly start to feel thirsty and pee a lot, loose weight (with out really trying) because you may just be at the very start of T1, or you could be a very early starting LADA where T1 starts very slowly, or theres MODY a genetic diabetes, who's to say your relatives although labelled T2 weren't in fact some of these which would increase the chances of you also being one of those to an extent.
BTW an early T1 tested with c-pep can easily give a false negative due to the honeymoon period. I don't suppose you have a blood glucose meter you can test at home with?