Novorapid between meals?

I take Lantus slow-acting insulin every night, and Novorapid before breakfast, lunch and dinner. Before lunch, my sugar was 4.8; I took what I thought was the right dose for what I was eating, but now I'm feeling all fuzzy-headed and sluggish, and my sugar's up to 10.2. Is it OK to take another unit of insulin, or should I just put up with feeling grotty until my next mealtime?

Haha, diabetes.co.uk have just posted a video on Facebook which answers my question! :lol:

I usually take between 10-12 units before a meal, and that difference of 3 can make a big difference to my sugars. Today my sugar was a bit low, so I only took 10, whereas I'd usually take 11 with lunch, that's why I thought an extra unit might do it.

The trouble with leaving well alone is that I'm a self-employed writer, and if I'm in a brain fog due to high BS, I can't write - I just stare at the screen and no words come. Which is not what you want when you're on a deadline! It doesn't matter so much in the evening, I can just slouch in front of the TV

I'd love to be carb counting, but my insulin ratios seem to be more or less random. One day I can wake up with a BS of 9, have 10 units of insulin and 2 weetabix for breakfast, and a couple of hours later my BS is 5, the next day I can start with the same BS, have the same insulin and the same breakfast, get the same amount of exercise and my BS is still 9 two hours later. My DSN reckons my pancreas produces insulin some days and not others. All I can do is take a best guess and try and keep it in sensible limits, which I mostly manage, thankfully!