Hi narinder
Gestational diabetes can often, though not always, lead to long term diabetes.
I believe there is a link between Type 2 within families but again lots of type 2's are the only people in their family to have it so again not necessarily a connection. I wouldnt like to comment on your symptoms to worry you and no one here would really be comfortable offering 'diagnosis' as such.
Have you tested with your blood monitor, to see what your figures are to give you an idea if they were similar to when you were diabetic when pregnant?
In any case, a visit to your GP is your best bet at this point. I wont tell you not to worry but you will feel better if you arrange to get checked out.
In your worse case scenario,there are lots of type 2s here who manage very well on (usually lower carb) diet and exercise, or with some medication and attention to diet so it need not mean you have to inject insulin right off.
Take care