Sounds like you need to see a doctor to rule out a metabolic problem which may be genetic in origin. Hypoglycemia is low blood sugar. For sure, seeing a nutritionist and learning to balance protein and low glycemic index carbs will help. You might find following the Zone diet plan works for you -
Healthy Diet Plans | Zone Diet is a healthy weight loss plan based on science, - it's all about blood sugar/glucagon control and that balance determines hunger levels.
Based on your height and weight, you need at least 3000 calories a day to not feel hungry. If that takes you to an unacceptable weight, then the only way to lower your body's set point for weight is through exercise.
It sounds like you're feeling very defeated right now. Maybe too depressed to see hope in any options. Turn to the experts if you can. You need professional assessment and help, you can't do this on your own.
When you're ready, I hope you pursue this and then report back to us. If it's something genetic, I would be very interested in hearing what it is.