Could I be Hypoglycemia?

I was pregnant 5 years ago and lost my baby but when i was about 2 months my doctor said i was hypoglycemic. I took iron pills when i was pregnant and afterwards for alittle while. I recently found that all the symptoms i've been having; lightheaded, hungyry all the time, tired all the time, are all symptoms of hypoglycemia...what i'm wondering is does hypoglycemia ever go away and could i have been hypoglycemic this entire time and how do i get diagnosed?