I think speaking to the GP is probably the best thing at this point.
Yes, do that, see if he will let you have a good glucose monitor.
Ok, I'm not gonna give you advice but tell you how it was for me in the first few weeks.
I was dreadfully ill, my brain didn't and couldn't function without the desire to stuff myself silly with carbs or any sweet things or rubbish junk food!
It took a fasting test after about two months later to clear the fug and alleviate the symptoms, it took me a few weeks after that to feel good and notice that I was truly feeling better at all! By then, the weight was dropping off me and my energy levels rose to really good levels. In all my diets started in 2001. For a decade they were still full of carbs, and we're killing me, of that I'm certain! It wasn't till just over three years ago that I started very low carb. That took weeks and I was very wary, like yourself, and worried, and anxious, and scared for myself. I couldn't think straight, what would happen to me? I had to go through the carb flu, where I thought that even eating no carbs, was not working. Eventually, over a couple of months fighting this condition and being resilient to all those really nice sweet things, I came through and have never gone back!
All the symptoms were my body telling me that the foods that were healthy, were actually killing me!
@Brunneria has been at this a lot longer than me, and she has never encountered a medical practitioner that has got it right for her, even my endocrinologist has had to study how I reacted and change his mind on how I treat the condition and how food can be so bad for you. Carbs of any type are bad for me!
I have a tablet that changes my glucose into glucagon to help me not hyper. So I don't hypo! This does help but it is no cure, it is still there, if I don't behave, it would come back and I would be very ill. Control is the key but you have to get there first and it does take time.
Fasting helps, I thought like you that I had to keep filling my face because I have felt like this for a couple of decades, it's a symptom! Fasting and eating a lot less is good for me. I'm weird, my body is definitely better when I've not ate. I can only eat when I want, my body is not demanding food no more.
I think you want instant relief from the symptoms, it won't happen!
I think it's the symptoms that is clouding your scepticism about how your body reacts, if you don't like eggs then don't have them, I have a milk intolerance because it's a form of glucose/sugar. I'm not lactose intolerant! Go figure
You have to find your own way of eating at the cost of what you can afford. As others have said, you do have to shop around and find the cheap cuts and bargains.
Planning ahead will help, a food diary when you get a monitor because how can you discover what's happening?
Stress to your GP about how you feel after food.
Stress to him about the symptoms and about Hypoglycaemia even ask him to get more tests, more bloods and find you a referral to an endocrinologist.
Believe me, low carb works. How you do it, is your way and how you tolerate food!
Best wishes.