Blood Sugar problems 7 yrs post op

Hello,
I had RNY in 11/01.  I was very successful.  I have lost 175 pounds and do not need to lose any more.  About 3 yrs ago I developed reactive hypoglycemia.  I have been on the roller coaster ever since.  A slight amount of carbs will send my BS to 300 plus and then if not closely monitored will drop to 30 in a heartbeat.  Even the Dr.'s are baffled.  It's not that my body isn't producing enough insulin - it certainly is - it's just the timing of the release of insulin.  I now take Acarbose at evry meal and inject Byetta 2 times a day to try to control the Highs and lows.  I will be meeting with a nutritionist to try to get familiar with the Glycemic Index and go at it from that angle. My question is this - is there anyone else having to follow these stiff guidlines this far out?  I don't know whats next.
Peggy in Illinois