Welcome to you. I hope someone can pinpoint some of the causes of not continuing to lose, besides the typical stall.

What changed when you went into the hospital? Was the food low carb? Are you able to request a particular diet? If high carb, did you find yourself feeling extra hungry between meals and/or feeling as though the amount of food was barely enough? Did you track calorie intake during that time?

When you have shifted your body to ketonic basis, you will find that the carbs you do consume are more apt to be stored as fat than before you started Atkins.