Hi McScrappy,
Could be one of a number of things to be honest. Do you inject in the same area frequently? If so you could have developed some small patches of lipodystrophy (sp?) - these are small areas of scar tissue caused by the needles. They cause pockets where the insulin finds it difficult to get out of. If this is the case then find another place to inject for a couple of months while you heal.
Has it suddenly got a lot colder where you are? You need more insulin when its colder and less when it is hotter (can cause a swing in dosage of up to 10% believe it or not!).
Do you have an illness (cold, flu, infection, etc.). The body uses more insulin when it is fighting. You may not even feel that ill as your body is already using your immune system to fight.
It could be a bad / different batch of insulin. Try a new bottle / new batch if you are worried.
It could be stress, most (not all) diabetics need more insulin when stressed which is why some of us have different ratio's at weekend than through the working week.
Or it could just be diabetes which likes to keep us all on our toes by throwing curve balls at us just when we think we have our own condition under control.
Try the above, speak to your doctors and above all don't worry about the higher doses for now. Just keep those sugars under control and accept that every now and again this will happen.
Hope this helps and let us know how you get on.
Mark
