This patient support community is for questions related to juvenile diabetes including celiac disease, depression, diabetic complications, hyperglycemia / diabetic keto-acidosis, hypoglycemia, islet cell transplantation, nutritional issues, parenting a diabetic child, pregnancy, pump therapy, school issues, and teens with diabetes.
Remember that insulin is a hormone. Your body will need time to adjust to the "new" think you are putting into it. Yes, you are still putting insulin into your body, but it's a different type, and yes, it does make a difference.
I don't think you have anything to worry about, but try taking a blood glucose reading when you feel like this and see what they number is