Just wanted to add that you can have hypo symptoms even when your BG is above 4.
I've been too high for a long time (my BG) and I had hypo symptoms (like described in the first posting) on a BG of 4.6.
Because my body had adjusted to having too high a BG, I couldn't handle a 'normal' level.
So measuring is really worth it. It will tell you more about your body and how it reacts to when and how much you eat.
I eat 5 times a day. Breakfast, something fairly light around 10.30, lunch around 13.00, fruit or one more sandwich around 15.40 and dinner whenever (sometimes I'm late with that). Might not work for you, but it's something to consider. Basically you should adjust your eating pattern to your BG levels, I guess.