Is it diabetes?every time i eat sugar...?

my head hurts for like 4 hours, but its not a really strong head ache.and i get kinda sleepy but i dont go to sleep, my eyes though, they like get tiered if i eat anything with sugar.soda,cake.. anything...
on wenday-saturday, i had symptoms of diabetes, i had extreme thirst,really dry mouth,and frequent urination.but IT WENT AWAY.im sleepy all day even though i sleep for like 10 hours.why do i keep on getting headaches when i eat sugar???

also, my fingers lightly fall asleep if i dont move them for like 5 minutes but as soon as i wiggle them they go back to normal

You need to go to the doctor and get tested for diabetes. When I eat a lot of sugar I also get the headaches too.
You are also having the classic symptoms as well. Thirst, urination, tired.
I am diabetic and have gone through the same things as you.

You can't diagnose someone based on these symptoms alone, but its possible that these are symptoms of diabetes if this happens on regular basis. You need a blood glucose test to diagnose diabetes.

If this just happens when you eat sugar, its possible that you are just eating too much sugar. Eating sugar causes a reaction that is opposite of diabetes - the pancreas gets tricked into producing too much insulin because a huge increase in blood sugar from the food signals the pancreas that you have just eaten a gigantic meal that would need a large amount of insulin to metabolize. So excess insulin is released, and you experience a blood sugar crash called reactive hypoglycemia. Try eliminating sugary foods unless you eat them with or immediately following a meal.

I reallllly hate to say it but i think so...the most common symptoms for diabetes is sleeping (even if u just came up from a nap), constant urination (especially at night), if u ever get super dizzy and feel like the world is spining, and the headaches are also (kinda), weakness also. You seem to have all the symptoms, u can get an over the counter diabtes tester at a drug store...try ur hardest to stay away from that stuff...until u get tested, u could get hurt...asap get that tester!!!