Why does the pressure and warmth in my head not go away (day 3 now) when i have a hypoglycemic moment and intake sugar?

Warm head: I don't know why your head stays warm for three days after hypoglycemia and don't know that the two are related. That said your obvious choice is to work hard at avoiding hypoglycemia. You are much better off if your blood sugar is a bit high and gradually lower your blood sugar to avoid hypoglycemia - warm head or not. There are a number of reasons for "headaches" and you should see your PCP.

Not sure, but: Make sure what you are feeling is indeed hypoglycemia (sweaty, hungry, jittery, weak, tired). Not sure if the head symptoms are related. A strategy to avoid hypoglycemic episodes is to avoid high glycemic index foods (stay with foods under index of 60), don't exercise for at least 60 minutes after eating, eat more healthy fats and lower carbs in general. Rare but consider checking for insulinoma