All energy is lost in the nausea.
Cold hands, anxiety, the fear of loneliness all blended to torment the mind in the darkness of the starlight or street light depending on where you are. Pull those sheets over your head and carress that pillow for it is all that you have. Think to yourself, "Daylight, where art thou?" and fall asleep to image of the smile and soul-piercing eyes, the sound of the voice that you have memorized, and the warmth of the arms which you could die happily in. Grind those teeth in the madness until you dream of the sweetness that you long for.
Yes, this is only temporary.