he novorapid will work but there's a lot of external factors that may impact upon it...
The type food you have ate;
Is your food ratio bolus correct;
Whether you carb counted correctly if it was a food bolus;
If a correction bolus-is your ratio correct?
Is your basal rate correct?
Have you basal tested?
Have you unusual stress?
Have you stored insulin correctly?
Was there any leakage of insulin after your injection?
The list is endless......