It's actually relieving to know that other bubs at nina's age is refusing food too. Nina used to be a food piggy, then had to go on antibiotics, and ever since refuses to even try food. Around the same time she weaned off the boob and is now on formula. My mum reckons it's just that the forumla is filling her up and she doesn't have room for food. I'd love for her to start eating again, but I guess she'll do it in her own time.
Try not to stress about it too much though, as it seems so many mothers go through the same thing.