Hello & welcome, I am Dr. B,a licensed veterinarian and I would like to help you with your wee one today.
What allergy pills is she on?
Did her vomiting/GI upset start after these were started?
Can she keep water down?
Are her gums nice and pink (not white/pale)? Moist or sticky?
If you press on her belly, does she have any tensing, tenderness, discomfort, or pain?
Could she have eaten anything she should not have (ie bones, stones, socks, toys, plants, chemicals, humanmeds, etc)?