Being too cold, too hot and not eating, sick and not eating, getting too tired, stress, like coming to a new home can all cause hypoglycemia. It is always a good idea to have Nutri-cal and Karo on hand. There are many good sites explaining what it is and what to do for it. I'm sure once you read as much as you can, you won't be near as worried because you'll know exactly what to do. Congratulations on your new baby...