I hear you! I've had the same problem - and still do if I give myself the slightest chance. It's easy to turn to sugar for a little energy or a little comfort. And there is diabetes in my family as well.
I hope that you'll go visit your doctor as soon as you can and get a thorough checkup to make sure that in other ways you are healthy. That needs to be your first step.
The way I was able to get more control over sugar in my life was to change how I ate and what I did the rest of the day. I've been able to do this with the help of a gym and a personal trainer, but you can do it with a different sort of support group, or on your own, if you need to. Our bodies need certain nutrients to be healthy and feel good. We also *need* to expend calories through physical exercise; that's the way God made us. You probably have a lot to do, but if you can add more movement to your daily routine it would be a really good thing.
I learned that if I ate regular meals I actually ate less. I would start feeling guilty about what I ate, so I would skip a meal; then when I ran out of energy I would turn to sugar to keep me going - and kept at the sugar the rest of the day. It works for me to plan a few healthy options for breakfast and lunch and always stock those items in the kitchen - and NEVER skip those meals, no matter how busy I might be. I plan regular snacks as well, so I'm scheduling myself to eat six times a day. This has been amazingly helpful in de-sugaring myself.
Our bodies need proteins, carbs, and even a little bit of fat to operate well. Your best energy comes from proteins - with sugars your energy level spikes and then drops, but proteins give long-lasting energy. Carbs are not all bad guys! They are essential (and rather unavoidable), and some of them are very good ones which you want to include. Ask your doctor for recommendations.
There are a lot of books and programs out there, and you may want to have a go at some of them. But the basic principles are the same: if you make the calories you take in *the calories that can serve you the best*, rather than empty ones, your body will be happier and not as interested in the junk. And if you can expend more calories each day, then you're on the way to losing the weight. I'm not diabetic and I enjoy a little sugary treat now and then. But I'm glad that I'm in control of it and it's not control of me. As a matter of fact, I'm finding that a little is all I want or need - more than that and it tastes bad! As I say, though, I have to watch myself or I can get right back into that ol' addiction again. Hope this helps.