I have an amaryllis that was given as a gift for Christmas. It had been doing beautifully and during a warm, sunny streak of weather I put it outside with some of my other plants. Well a gust of wind caught it and it fell from my second story porch, no one was hurt except for the plant. The bulbs hadn't cracked so I quickly repotted them (leaving the neck of the bulb above the soil). Some of the leaves had snapped off so I cut back the ones too damaged to save and I was left with three leaves. It had drooped some, though it seems to have perked back up, but one leaf is turning yellow. I placed it in the window hoping that more sun will help with the yellowing. Will my amaryllis grow new leaves over the summer before it goes dormant? Or have I well and truly shocked it?
With this disruption in the bulbs root system and with only one flower remaining, I would just continue care and allow the plant to die down naturally and go into dormancy.
Your bulb will return next year!
These links will help you.