Hi. To keep it brief, as I tend to ramble on...nothing has gone wrong. As you say yourself, your fish was accompanied by "high carbs". Your blood sugar therefore went up pretty high and was still high when you woke a few hours later. You seriously need to address the amount of carbs in your food.
Questions...1] was the fish good oily stuff or was it in batter or breadcrumbs (ie. higher carbs)
2] how high in carbs were these "high carb" you ate?
3] why eat bread with your dinner (it will spike your blood sugar)
4] why increase insulin before bed, risking a hypo ? Bring levels down earlier by not eating high carb foods.
5] importantly - what was your blood sugar level before eating...
if you don't know that, you cannot tell how much it has risen a couple of hours after you have eaten.
I know it all seems a horrendous challenge, but you need to be more aware of what high carb foods do to you levels..and avoid them.
Good evening my learnerd friend. (1) The fish was fresh fish cooked in oil and not battered.
(2) The high carbs were Posho (Cornflour); Rice, Matoke (cooked vegetable banana), and Millet.
(3) The bread WAS my evening meal.
(4) No Hypo last night and only got up once in the night. (Normally 2 or 3 times).
(5) At 6 pm it was 9.2 which was before eating & Insulin.
(6) In Uganda I don't have much choice over what I eat. Staple is Matoke, Posho, Rice, Potatoes, Bread. In the "bush" things like Beef, Bacon, Ham, Lamb, and Pork are not readily available. I even have to drive 25km to buy Bread.
(7) All of this food is fresh and NOT processed - so my blood sugar tends to be lower than in the UK where I eat a mixture of carbs & protein.
(8) Tonight I had fried egg, tomatoes, and cabbage, all rolled up in a Chapati (I had about 5) - we call this "Rolex" ( In Uganda we don't wear Rolex - we EAT them.)
Thank you for your concern.