I have piled weight on in the last few weeks, I too am up to about 23lbs, but I started this pg much heavier than ever before. In the last week I have started to retain more fluid. My ankles & fingers are swollen so I think that is contributing as I can't seem to eat much at once so I don't think it's too much food!
I am just grateful I haven't put my usual 42-50 lbs on!!!