Slow weight loss or is it a stall?

I am 4.5 weeks post op and have lost about 24 lbs.  I haven't lost any weight in the last 1.5 weeks.  Is this normal or have I hit a stall? What do I need to do to get going again?  Because I am considered a lightweight, I will not loose a lot of weight at one time.  But I would be happy to see the scale MOVE!  I guess my old mind set is telling me that this is it, this is all I am going to loose (because that was the way it has always been in the past) and then I start gaining weight!  Help! ! I need advice/encourgement! 

it is both normal and a stall. Virtually everyone stalls for a couple of weeks starting about three weeks after surgery. Stay off the scale for a while (because clearly this is not good for your stress level) and keep following your plan. It will start moving again unless you are sucking down milkshakes all day, which I highly doubt you are doing.