Hello
Yes it is very common for bs to rise with illness. You need to check for Ketenes in your urine at this time as well. You are a prime subject for DKA. This is life threatening. When you get ill, you need to take more insulin to not only keep your BS under control, but I have fount out over the years that if you keep you BS low, you heal much faster than if you allow your sugars to stay high. Get some Keto Stix from the drug store and check you ketenes. Even if you are for example 85 mg/dsl for a blood sugar reading, and you are spilling Ketenes , you need to take extra insulin. This is the only way to get rid of this life threatening problem. You will always heal faster with good control of your BS.
Let us know what your readings are. Let us know if you have any other questions. We area all here to help. Keep us informed as to how you are doing.
Don