Low Blood Sugar

I'm new to cigar smoking so forgive me if this sounds stupid. I have low blood sugar...most of the time I never experience any symptoms..I feel just fine. A couple of times now I have smoked late at night-once on an empty stomach another time after a light meal and smoked a heavy duty cigar like a double maduro or Cohiba 550 EV and it sent me into a tail spin as far as my blood sugar goes. I get light headed, headache, weak, shaky...and it lasts for hours and I have a crappy nights sleep. I get up next morning and I'm still a little "off". I realize now that I should smoke after a good meal is under my belt. Does anyone else have any problems like this? I'd hate to quit after finding something this great but I need to try to try to keep my blood sugar under control. I googled the subject and it told me that nicotine spikes your blood sugar, as does caffeine...I just need a cigar sage to set me straight as to what steps I can take to keep my blood sugar from going nuts...so that I can survive my new hobby.