So I've been on steroids (for poison ivy) for five days now. I've been on plan for the most part, no major deviations, within my caloric range every day. I've gained almost 5 lbs. Obviously this has got to be water weight from the meds. Today is my last day on the meds, and I don't want to be expecting the weight to woosh off overnight and then not see the scale move for a day or two and get frustrated. In your experience, how long does it take to lose the water weight?