You had Bipolar Disorder, which means you had extreme highs followed by extreme lows. Dean and Sam were used to the highs now, but something they could never quite get used too, was the lows. During the first low, they learned they had to hide every sharp object from you. During the second, to hide the medicine. It was 3 days into this low now, you had only left your room once in that time. And that was just for the bathroom. The rest of the time you were in bed.