She was constipated about a week ago and is only just getting better. Shock to her system I think So we eat prunes every day now and drink loads of water which seems to have helped, and we have donated EBM which we often replace one of her cows milk bottles with. I'm just amazed that something seems to have clicked, I feel like she eats and eats! Good fun having properly solid poo's now too Thanks guys. It's a relief to know she's not letting herself starve without her breastmilk.