hi there, your history is very sketchy but what i understand is that you are suffering from hypoglycemia
. You need to get to the root cause of it. You can start with a complete health check-up done and visit your family physician if any thing is amiss. In the meanwhile you can keep some chocolates with you in your pocket or purse and take it when you feel you might be hypoglycemiac. Take proper diet and do not self medicate. Take care.