Yes Nupine, that is correct. It's reffered to as a hypoglycemic headache. The problem especially with eating a lot of sugary foods is it makes your glucose level sky rocket. You get a high/energy etc then as soon as your body has burned through those few empty calories (sometimes as quickly as a few minutes) your body no longer has the means to maintain it's normal glucose level because it just excerted so much insulin trying to control that high sugar intake. This excess release of insulin helps to drop your blood sugar as well and the sudden decrease of sugar from being burnt off. One of the first signs of a hypoglycemic episode is a headache.
I totally know what you mean about having to come to terms with your bad eating habits. I think that may be why I have such a special interest in you, because I WAS you. And I have just VERY recently come to terms with this myself. But now that I have making healthy choices is actually easy. And more enjoyable because I know I am doing good things for my body which will be my vessel for the next 60 years hopefully!
Also to add to the packets, I just got a new kind last week that I LOVE and I thought I would mention it to you. It's the crystal light hunger satisfaction type. I love the strawberry banana! You could probably even add some ice and blend it up for a smoothie! And it really does help fill me up more than plain water because it contains fiber.
Glad you are planning to try to do things more healthy and that you are feeling better! Like I said before if you have any questions, just as or PM me!
As for me, WEdnesday is weigh in. Except for the mishap at macaroni grill earlier this week, I've been pretty darn good. I don't know that I've lost a lot of weight, maybe a half pound, but I know my shape is changing, I've had SO many people this week at work etc tell me I look like I'm trimming down.

yay. I did my elliptical before dinner tonight, and I actually feel like doing it now again instead of HW! LOL I think I'm going to! Then enjoy a 1/2 cup of fat free no sugar added ice cream and a huge glass of water which for me in WW world is 1 point!

YAY for that stuff! HAve a good night everyone and keep up the good work!
WELCOME Terrie!