I used to feel like I was starving to death even right after meals. I was constantly hungry and searching for food like our ancestors. It got to be really bothersome. My weight stayed the same and I even started to lose weight. Most of my docs didn't see it as a problem and just kept telling me to eat more. To me, it was terribly annoying to be eating so much and so often. It felt like I wasn't getting anything out of my food. I had a few blood tests that were borderline for hypoglycemia, but all anyone told me to do was eat more.
I reached for fruits and veggies like the previous poster recommended. Apples were my favorite things. Finally, I had a doctor teach me the appropriate way to deal with what was something similar to reactive hypoglycemia. If not treated right, it could turn into diabetes later in life. Eating more is not the answer.
Here is what I learned: add protein or complex carbs to every meal and snack, especially fruits. Good things to include are cheese, peanut butter, nuts, eggs, and yogurt. These are things I avoided because it seemed fattening, but it was a miracle cure. No more sudden drops in blood sugar like before which means a lot less tummy pain and that sudden, irrational, moodiness is almost gone as long as I plan ahead.
It is really difficult, but you should try to avoid simple/refined sugars and simple carbs. Natural sugars are bad, too, though, if not balanced with protein or complex carbs.
See your doc, but it sounds really familiar and may not show in a blood test. Perhaps a nutritionist could help, too. My current doc didn't need my blood to know what would help me in this situation.
Total abdominal hysterectomy at age 26 due to abnormal bleeding. Kept ovaries.