Welcome Felinefan....sorry you've not gotten the number of replies you've hoped for....you came on past my bedtime

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With your dad's diagnosis, you now have a family history of diabetes, so there is a chance at some point in the future you may develop it as well. Maintaining a healthy weight, getting regular exercise and eating will hopefully keep you diabetes free for a long while. Sounds like you are doing well for now.
I'd consider your dad's diagnosis a wake-up call for your entire family to be healthier.
One thing to consider....all of us Type 2's were pre-D at one point, whether we knew about it or not. If you think you may be pre-D (and only your doc can diagnosis this) be extra-diligent about your health and have regular checkups so that if you progress to T2, you'll know early and be able to control it easier.