I have been advised by doctor to inject insulin twice daily with a total of 18 units along with a tablet Glimulin MF and Prandial 2 mg twice daily. After starting this medicine, I am having more symptoms like Giddiness, more sleeplessness, tiredness. Unable to do exercise for long because after walking about 2 KM briskly, I get giddiness which was not there before I started this treatment. So, I do not exercise, but take the medicine regularly. Am I doing correctly?