My 8mo DD has a really nasty cold and is teething quite badly. She took one good feed yesterday around lunchtime but the next time I came to feed her she kept opening her mouth then screaming and pushing away from me. Since then she has refused to nurse altogether. I managed to get her to take some milk from a cup about 6.30pm but she hasn't had any since. She doesn't eat loads at the moment and I'm a bit concerned if she is getting enough food/liquids. At night she usually wants to feed every 2-3 hours but tonight she won't take anything. If she even sees my breast she screams and pushes away from me. What should I do?