Your cold could be affecting your BSLs, yeah definately. Hopefully when you're feeling better they'll go back to what's normal for you.

As for the levels and when/if you need insulin, it's up to your doctors. With me as long as I had my levels between 4 - 7 before meals, and 4 - 8 2hrs after eating then he was happy. I guess you'd have to discuss it at your next appointment as I'm not sure if different doctors have different cut off points, you know. Sorry I can't help any.

xox