Usually in the evening at some point, I start to get shaky, faint, sweaty, stomache hurts (feeling like I am going to throw up), and I get a headache. It feels like I need to eat something quickly... just not sure what. It seems like when I eat something sweet quickly I begin to feel better. It just depends on what I find to eat... Almost like I am craving sugar? Sometimes this wakes me up at night & comes on then too. It is getting more frequent over the last 2 weeks, happening 2-3 times a day. I just turned 41, and ever since, it seems worse. Not sure if I should be concerned, or if it's just a lack of something in my diet. I drank some juce with magnesium in it last night after it began to happen, which seemed to help a bit after about 15 min.