As
@silentsquirrel says, my partner has reactive hypoglycaemia - he's had it for 30 years or more and manages it quite well now, though he does sometimes have the occasional hypo still. He has a full-time job and a 45 minute drive to get to it, so it really is a manageable condition.
This article is quite good, and has more information about it. As
@Nicolle says, it's eating carbs which causes the hypos, so eating like a diabetic - ie with lots of protein and fat and not too much in the way of carbs, is the best thing you can do. You don't have to avoid carbs altogether, just make sure you don't eat too many at once (how many is "too many" will vary from person to person, so you may need to work that out with your meter). You will probably still need to eat little and often though - R has found by splitting his meals he can manage his hypoglycaemia much better, and it really is the recommended treatment for hypoglycaemia. R also finds it helps to combine fat with carbs so that the effect of the food lasts longer. And he always has a fatty bedtime snack so he doesn't wake up starving - a yogurt is a really good one to go for.
R has found that very small amounts of sugar are enough to raise his blood sugar when he's hypo - a carrot will often do the trick just as well as a biscuit, as well as being healthier! It's not something which would work for someone on insulin having a hypo, but for reactive hypoglycaemia it's a useful thing to know - the temptation when you're hypo is just to eat loads of carbs, and eating too many is the worst thing you can do, it just means the whole thing keeps going round in a circle, as it sounds like it's doing for you.
Assuming Jenny's maths is correct, it doesn't sound as though you have pre-diabetes (I'm not sure why your doctor thought you do), and you do have low blood sugar generally, so I'd suggest eating dried fruit or having a small glass of fruit juice when you hypo - it brings your blood sugar up quickly without being too high in carbs. We always travel everywhere with a bag of dried apricots, just in case. If you do have pre-diabetes you should avoid fruit juice.
But the main trick to manage the condition and prevent hypos, so you never need the hypo treatments, is to avoid big carb-heavy meals and eat lots of smaller low-carb ones.
The only other thing I wonder, is whether you've been tested for Addison's disease? I'm afraid I don't know anything about that, except that it causes hypos (because my diabetes consultants always want to test me for it because I have lots of hypos with my diabetes). But your hypoglycaemia seems to be very much more debilitating than R's, so that does make me wonder if there might be something else effecting you too. It could be the combination of the hypoglycaemia with your anxiety though.
I hope things improve for you.
