LOW BLOOD SUGAR READINGS!!!!

I am 18 mths out and my blood sugar keeps dropping, i am not eating no sweet things, I have lost 121 lbs and weigh 110. I have to eat every 2 hrs in order for my sugar not to drop. Does this happen to anyone else. Or do you have suggestions, I eat no fruit, or juice. or anything with sugar. I am lost... My blood sugar drops to as low as 28, i will eat peanut butter or protein and it gradully comes back up. HELP... if you can... i am calling the Doc tomorrow, i was just wondering if this has happened to anyone else. Donna

I have reactive hypoglycemia. I eat a variety of foods and "bad carbs" seem to cause mine the most. Fruit has never bothered me.