Heavy training can bump your glucose.
Also, if your taking roids then that can truly screw your metabolism beyond repair.
So, what is high? When do you take readings? How do you take readings?
Who told you a very low carb diet was a good idea? There surely are foods to avoid but a very low carb diet is probably not good for your diabetes and not good for your training either.
Are you brutally honest about your diet?
Do you drink? Do you drink beer?
There is no way back from Insulin (at least not at the moment).
You had better get this in hand quickly.
By the way, you need to keep track of a lot more than just your blood sugar. For example, you need to keep track of your blood pressure, your tryglicerides, your cholesterol, and a lot more.
A good doctor is something you have to work to find.
Not to be a bitch, but this will kill you if you don't take it in hand. Manage the disease or it will manage you.