LO is 7 weeks old and for the past month or so she has been exclusively breast fed. In the very beginnig she drank formula and pumped milk as well. But yesterday when I tried to give her a bottle of formula she wouldnt drink it!, she drank a teeny bit when my husband tried to feed her, I thought if she got really hungry she would drink it but even after waiting a couple of hours she wouldnt take more than a few teeny sips! I go back to work in a month so I'm very worried about this. we tried several different nipples too! Has anyone been through this?