if you are not producing enough insulin then exercise can be counter productive as your body will produce more glucose to fuel your muscles and without the insulin your body will not be able to deal with the extra blood glucose so your level will go check my Bs up
The danger normally arises if you have very high blood sugars (over 14mmol) and little circulating insulin, or if your exercise is anaerobic and leads to a response from your liver. I was officially diagnosed after developing diabetic ketoacidosis during exercise, so yes, occasionally it can be dangerous. Exercise, high lood sugars, no insulin led to a potentially serious problem. However, I am convinced that it was regular exercise that prevented me from developing higher average BS levels when my pancreas was failing. (I have a slow developing form of type 1). In effect regular exercise meant I was able to cope with reduced amounts of insulin. Though I have little insulin resistance, everything I read sugests that exercise reduces insulin resistance , the lower demand resulting in less pressure on overworked beta cells.
You should be fine unless you have a rapid change in your condition.When your meter arrives you can start testing before and after and see what happens.